The success of The Big Bang Theory is astounding. Debuting with little hype in 2005, the show is the highest rated comedy on television, running for ten seasons and has just been renewed for two more. The idea was simple: A pack of science geeks who are geniuses at science but total losers with women, effected when a gorgeous blonde moves in next door. Kaley Cuoco was pushed as the hottie and took off nicely. But the show really caught on when the producers expanded it to two more women. Amy (Mayim Bialik) was a dressed-down nerd in her own right. Meanwhile, Bernadette (Melissa Rauch) was a scientist who happened to be a knockout blonde. Together, they helped make the show a monster hit.
Since this new girl power started, Cuoco and Rauch have become huge favorites. Cuoco is clearly a popular lady in magazines, doing numerous sexy spreads in magazines to flaunt her hot looks. Meanwhile, Rauch has shown off a surprisingly sexy side as well to the point where many fans claim she’s actually hotter than Cuoco. That extends to their characters as both Penny and Bernadette have gotten some really hot stuff to get audiences going.
Whether as themselves or their characters, debates rage on over who can be hotter. Here are 20 images of the two ladies to judge for yourself which blonde puts more Bang in the Big Bang Theory and be among the sexiest on television.
20 Twisting Away
There’s something about Twister that can surprisingly erotic. Put four or five people on a mat, force them into close quarters to touch the right circles and it can be notable. Have it be just women and it can get even hotter. That’s showcased by an episode where Penny, Bernadette and Amy join together in a game of Twister to try and liven up a dull night in. Bernadette is surprisingly limber (“we should do limbo next. No one beats me at limbo.”) with Amy trying to be professional. Penny was roped into this and is too busy drinking red wine to really get into the game. At one point, she passes right out on Bernadette, only roused when Bernadette says they’re out of wine. The sight of Cuoco and Rauch mixing it up like this is interesting and shows how a simple party game can show ladies off nicely in the right twists.
19 Bikini Bod
It was quite common in the early seasons of the show to have Penny wandering around half naked most of the time and not getting the big deal. As the character matured, that was toned down but when you have Kaley Cuoco in your cast, it’s hard not to have her show off.
In a popular episode, Penny, Amy and Bernadette go to Las Vegas for a convention. Penny is busy with her studies for a big college test and sticks to her room. This allows Bernadette and Amy to hit the town where they end up cutting loose and get massively drunk. The next morning, Penny, her studies complete, decides she can now enjoy the pool. She comes out in a fantastic orange bikini that shows off her body wonderfully. Bernadette and Amy are still hung over and Penny gets back at them for their antics by yanking open the curtains to let in the blinding sun. She saunters out and the sight of Cuoco in that amazing bikini was something that shouldn’t be left in Vegas.
18 Red Hot Rauch
During her early time on Big Bang, Melissa Rauch was shown as nice and Bernadette but mostly in rumpled outfits that toned down her beauty. But in “The Santa Simulation” she got a chance to show off big-time. Interrupting one of the guys’ role-playing games, Penny decides to have the ladies do a little fashion show. In walks Bernadette in an ultra-tight red dress that hugs every one of her curves and some nice leg as well. It’s a stunning look as the studio audience goes wild cheering for her as she does a runway walk. Penny isn’t to be outdone, showing off herself in a short black dress that “got [her] out of two speeding tickets and jury duty.” Amy also joins but is far more dressed down as they head out for a girl’s night out. Sheldon sums it all up with “I know they’re trying to make a point but I don’t know what it is.” While Penny is hot, Bernadette is absolutely smoking and this was one Christmas present viewers enjoyed.
17 Sexy Smart
It was always obvious from the start that Penny was intended to be a bit of a dumb blonde. She played into that a lot, not getting science stuff although she had much better social skills than the gang. The writers did change that as time went on, showing Penny smarter than she seemed and able to grasp a few science facts. A running bit is the guys going through ridiculously complex ways to solve a problem only for Penny to suggest a solution so simple it works. The episode “The Egg Salad Equivalency” has Penny wanting to impress Leonard but saying science classes are too boring. She puts on a pair of glasses and Leonard is impressed. Penny then slides the glasses down her nose to utter “molecules.” Leonard immediately takes her to his bedroom to “take off everything but those glasses.” You can’t blame him as this showcases how Penny can make anything look hot, even being nerdy.
16 Bed Head
Usually, Bernadette is the voice of reason for the gang, the sane one who tries to get things on track and cut through the others' insanity. She’s sweet and bubbly but can surprise us with a dark side that scares people. She doesn’t get a lot of jokes and there's even a running gag about her work at a bioweapons lab that has some sinister goings-on. But that role turned out great thanks to Rauch’s performance, the contrast of the chipper, high-pitched Bernadette and the knockout she can be. It’s not shown much but hinted she’s very wicked in the sack and husband Howard very lucky to have her. This pic showcases them after a romp (which turns into a fight) and while covered up in a sheet, Bernadette’s amazing heat is on full display. Her addition is what really helped BBT take off nicely with Rauch among the hottest ladies on TV.
15 Kaley Au Natural
This photo shows the simple fact that even without clothing or even makeup, she is a knockout. In 2011, Cuoco took part in Allure magazine’s annual 'Look good naked’ feature. The spread got together a half-dozen or so actresses to pose totally in the buff. The shots were artistically done and designed so the actresses didn’t show off the goods. Cuoco simply had a nice pose, covering herself up as much as she could and yet still looking terrific. It’s not graphic but shows off enough of her very toned body to look amazing and the sexy look she gives to the camera is great. Cuoco doesn’t show off too much despite various sexy magazine spreads and wasn’t as blatant as some of the other subjects in showing off her rear end. But this still showcases the smoldering beauty that has made Cuoco the highest paid actress on television as well as one of the hottest.
14 Leather Hot
There’s something about leather on a woman that looks absolutely amazing. For a woman as curvaceous as Melissa Rauch, that just becomes hotter. An outtake from a magazine shoot, Rauch is clearly having a great time in this outfit. The zipper is down just enough for hints of her bra-less chest to show but not too overt as a hand rests on her hip. Her great smile shines so well and while the outfit must have been a bit uncomfortable to wear, you’d never know it by how great it looks. It truly fits like a second skin and Rauch rocks it to the utmost. The actress has been famous for not showing off too much (she had a body double for the hot nude scenes in The Bronze) but this showcases that when she tries and gets the right outfits, she can truly blow fans away with her stunning sex appeal.
13 Hot Cop
A highlight of every season of Big Bang Theory is the Halloween episode. Usually, the joke is what nutty outfits the guys will wear (one time they made the mistake of all dressing up like the Flash) and showing their inability to grasp how normal people act. More notably is how the gals have gotten into it in sometimes very fun outfits. For a party, Leonard decides to go as Albert Einstein, the perfect outfit for him. Penny accompanies him in an incredibly hot cop outfit that’s basically a black minidress with plenty of skin showing. She’s asked what kind of cop she is and she answers a sexy cop as “slutty cop only came with a skirt and two badges.” Leonard sure isn’t complaining about it, clearly knowing the winner he has and Penny loving showing herself off. It goes to show that when it’s costume time for the gang, Penny takes first prize every time.
When a show becomes as successful as Big Bang has, it’s inevitable the tabloids try to stir up trouble with “on-set feuds.” However, to their disappointment, the BBT cast has been shown to be pretty close off-screen too. This includes how Kaley Cuoco and Johnny Galecki dated for a couple of years, ended it but continue to play husband and wife on the show. Despite some attempts to push a feud, it appears Cuoco and Rauch get along great off-screen. They’re shown hanging out at parties, at red carpet events and more to showcase a good friendship. Here’s a funny example, taken from a Golden Globes after-party. Rauch is in a fantastic yellow dress with Cuoco in a floral one. Both are jokingly holding their chests and making funny faces. It shows the goofy humor of both ladies as well as their heat and how great they get along.
11 Poolside Posh
While she has done some very hot and sexy spreads, sometimes Melissa Rauch can be notable just for kicking back somewhere. This is a great example, a spread from the UK version of FHM and shows Rauch’s great style off quite well. The dress is lovely, showing off her underrated legs in high heels, the black lace skirt and white corset top mixing together for one very hot outfit. The way she’s posed on her side is nice and her look very inviting as if tempting the viewer to come closer. The pool is a great background, reflecting her heat well and the way her hair flows to her shoulders completes the nice picture. Rauch doesn’t need a bikini or other hot suit to stand out well and this shows off how she can easily give Cuoco a run for her money in terms of heating up any day.
10 Greased Up
The Big Bang Theory cast isn't just great with the acting on the show. Several of them are talented singers with Jim Parsons having done some Broadway shows. But it was still something when they got together in 2016 for the annual A Night At Sardi’s event to benefit charity. The cast performed several songs from Grease, dressed in the classic outfits with Melissa Rauch looking great in a 1950s dress and Cuoco making a good Sandy. However, Cuoco stole the show with her solo number. Coming out in a tight red halter, black shorts and fishnets, Cuoco performed the number “Dance 10, Looks 3” from A Chorus Line. As those who have seen the musical know, the number is actually a hot one emphasizing how producers look for “T&A” in their dancers. Cuoco lived up to that with the number, flaunting her beauty and underrated dancing skills. She has a hot look but this proved Cuoco’s vocals can match nicely.
9 Pretty In Pink
Bernadette’s key turn on the show was when she and geeky Howard fell in love and started a real relationship. Their relationship has had ups and downs but did stabilize with marriage and a child. A running gag was how their time in the bedroom was always being interrupted by the screeching voice of Howard’s mother (who was never seen) and putting up with her husband’s nerdy obsessions. But they got along well, particularly thanks to how much of a knockout Bernadette was when out of her regular clothes. She stuck to nightgowns a lot and this pink number is terrific, showcasing her ample curves and a reminder to Howard of how insanely lucky he is. That goes for viewers as well being able to see a lady as smoking hot as Rauch flaunting it nicely while still in character as a lady so much hotter than her nerdy persona.
8 Laundry Lady
Penny’s character started off as a waitress as the Cheesecake Factory who was also a struggling actress. The early character was a lot hotter and more sexualized with the idea of her not quite getting how her beauty drove men wild. Thus, a common thing would be walking around in very revealing clothing and causing men to just gape at her. That was toned down to make Penny smarter and more likeable but it was still notable to show her off a lot. Such a case was how Penny would often be seen at the apartment building’s laundry room and just standing around in underwear as the wash was done. Here’s a prime example as Penny carries on a talk as if not grasping she’s just in her bra. It was a key example of the character being “eye candy” at the time and while she has matured, that heat still remains.
7 Rauch Gets Raunchy
This was a huge deal for Melissa Rauch. While the actress had shown off a few times already on the show, she was still seen as the mostly nerdy gal. But with this spread in Maxim magazine, Rauch proved her worth as a truly hot gal. The tight corset pushes up her ample chest and her blonde hair flows wonderfully to frame her lovely face. Rauch puts on a hot expression, looking sexy with a “come hither” look to win you over. She shows off her legs as well and the design of the black corset just amps up her very nice curves. This is a stunning pic that boosted Rauch’s profile majorly and showed Cuoco wasn’t the only hottie on the show. It’s fantastic to see her transformation from the side character to true beauty and how Rauch can indeed get raunchy.
6 50 Shades Of Kaley
A running theme on The Big Bang Theory has been insufferable genius Sheldon not quite grasping how Howard will put his relationship with Penny over the “roommate pact” with his friend. When Howard and Penny get engaged, it finally sinks in to Sheldon that Penny is going to be a regular presence at his place and naturally worries about Penny disrupting the carefully placed order Sheldon has. This leads to a nightmare where Sheldon comes home to find Penny has turned the apartment into a sex dungeon with Leonard tied up. It’s clear Cuoco and Johnny Galecki were having a great time playing up the parts and Cuoco looked hot as hell. She shared the photo on her Twitter page to push the sex appeal even more. It was meant to be over the top and it worked while Kaley showed how dominating her beauty can be.
The Cheesecake Factory is a popular restaurant chain, promoting full-scale meals instead of just those deserts. The idea for the show was that there was a Factory not far away from the university the guys worked at and that’s where Penny worked. Bernadette was introduced as a waitress as well, using the job to pay for her studies. This allowed both ladies to be seen a lot in the Factory uniforms and both looked very nice in it. Cuoco’s long legs allow her to pull of the skirts much better and showcase the hot look of the uniform. Meanwhile, Rauch’s more ample chest allows her uniform to fit her curvaceous body and show off in her own way. Both characters would eventually quit the Factory for new jobs but each showcased a pair of waitresses more than a few viewers wish could have waited on them.
It takes a truly sexy woman to pull off this look. For one of the show’s annual Halloween episodes, Bernadette decides to go as Smurfette and naturally goes overboard with it. At a fan convention, Rauch shared the story of how tricky it was getting that blue paint everywhere and hours to wash off. She did look terrific in the red dress, yellow wig and the white cap and showing off nicely. Husband Howard (dressed as Papa Smurf) is distracted by a personal problem, leading to the bizarre sight of the duo having a heart-to-heart talk while completely blue. It’s the mix of heartwarming and offbeat that BBT specializes in and a notable thing to watch. Rauch did seem to have a good time, sharing behind the scenes pics of her costume and the makeup and all that effort was worth it to provide fans with one of the sexier looks for Bernadette.
The early seasons of Big Bang were marked by how Penny didn’t quite understand all the geeky stuff and her attempts to fit in with the gang could be mixed. This is a fun example as she shows up for a Halloween party in an outfit that mixes Supergirl and Wonder Woman. Naturally, the guys are less in awe and more nitpicking on what she’s gotten wrong about the outfit. That doesn’t take away from how hot Penny looked in it, showing off her long toned legs and while she spent some of the episode wearing a black wig, her blonde hair looked much better. The costume had a very nice dip in the cleavage which fit as the early seasons did emphasize Penny’s beauty over her real character. It leads to some of the early conflict with her and the gang with Penny managing to teach a lesson by forcing the guys to dress up in the “sexy” outfits they insist on women wearing. It shows off the true wonder that is Kaley’s beauty.
A common bit on Big Bang is to have the geeky guys get their own plot and the women go on a separate plotline. “The Contractual Obligation Implementation” is a good example. The main plot has the guys going to a high school to get female students excited about science and naturally their complete inability to understand women causes it to be a mess. Meanwhile, Penny, Bernadette and Amy decide to take a day off and go to Disneyland. They decide to do a “makeover” to look like princesses: Amy as Snow White, Bernadette as Cinderella and Penny as Sleeping Beauty.
Things of course turn into a mess when the guys call up the trio so they can tell the girls how important it is to be themselves and be known for smarts…while they’re dressed like Disney Princesses. This leads to a fun bit at the end as it turns out both Leonard and Howard are more than turned on by the sight of their girlfriends in these outfits. You can’t blame them as both Penny and Bernadette make these costumes hotter than Disney would have liked.
It’s no secret Kaley Cuoco loves yoga. The actress can be seen constantly in pictures going to and from her workouts and even in jeans and tight tops can be smoking as hell. She’s even put some Instagram photos to show off her style as she knows keeping in shape is key to the role. As Penny is an aspiring actress, keeping herself toned works on the show as well and so several scenes will have her trying out yoga moves. This one (from later in the series where Penny has cut her hair) is a great example. Naturally, Leonard loves seeing how flexible his wife is while Penny just concentrates on her work. She’s tried to teach it to Sheldon who spends more time babbling about the scientific aspects rather than actually doing the stretching. No matter if it’s in character or on her own, Kaley Cuoco in yoga pants is a sight worth remembering.
Sources: Big Bang Theory Wikia