The Big Bang Theory Wiki

Kaley Christine Cuoco (formerly Sweeting, pronounced /ˈkeɪliː ˈkoʊkoʊ/; born November 30, 1985, Camarillo, California) is an American television actress best known for her roles as Bridget Hennessy on the sitcom 8 Simple Rules, Brandy Harrington on the Disney Channel animated show Brandy & Mr. Whiskers, Billie Jenkins on the supernatural drama series Charmed and mostly as Penelope "Penny" Hofstadter on the CBS sitcom The Big Bang Theory.

As of "The Convention Conundrum", she got married to Ryan Sweeting on Dec 31, 2013. Before this, she was known and credited as Kaley Cuoco; and from then on, she begins to be credited as Kaley Cuoco-Sweeting. After the announcement of their divorce, her credit reverted to her maiden name as of "The Bachelor Party Corrosion" and was not changed again when she married the next time.

Early life[]

Cuoco was born in Camarillo, California, to Gary Carmine Cuoco, an Oxnard, California, realtor, and Layne Ann Wingate, a homemaker. She has a younger sister, Briana Cuoco (who voices Batgirl). Kaley was schooled on the set and earned her high school diploma at 16. She has many pets, including a Jack Russell Terrier named Raquel.



Kaley as Billie on Charmed.


Big Bang Theory's Penny and Leonard with Sheldon and Amy

Kaley Cuoco was named #1 on FHM-Us' 100 Sexiest Women in 2005 and #21 in 2008.[3] She began voicing the character of Brandy Harrington on the Disney Channel's cartoon, Brandy and Mr. Whiskers, later in 2004.

Kaley Cuoco in Quicksand

First television credit - TV movie Quicksand: No Escape - 1991.

Cuoco played Bridget Hennessy on the ABC sitcom 8 Simple Rules. Bridget was the eldest child, despite Cuoco being 6 years younger than her on-screen little sister (Amy Davidson and was portrayed as


Kaley on "Eight Simple Rules".

"the most beautiful girl in the school." She had several boyfriends throughout the series and used her feminine wiles to exert significant control over the boys she encountered. She has said that she learned a lot about comedy from her work with the late John Ritter.

Jim Kaley laughing

Cuoco with Jim Parsons.

In the eighth season of the hit cult TV show Charmed Cuoco appeared as the young witch Billie Jenkins. Executive producer Brad Kern stated Kaley's character was initially brought in as a possible spin-off. In 2004, Cuoco co-starred in the movie The_Hollow|The Hollow with stars Nick Carter and Kevin Zegers.

Sheldon and Penny in an elevator

Cuoco and Parsons as Penny and Sheldon

In September 2007, Cuoco began a starring role in the CBS sitcom The Big Bang Theory. She plays Penny, a beautiful and down-to-earth Cheesecake Factory employee who moves in next door to two geeks, Sheldon (Jim Parsons) and Leonard (Johnny Galecki). In the show, she moved to California from the Nebraska to pursue a career in acting.

Cuoco also starred in the film To Be Fat Like Me which premiered on January 8, 2007.[1] She also played a minor role in Prison Break for two episodes, "The Message" and "Chicago". She claimed the leading female role in the horror movie Killer Movie in 2008, as well.

She attended the 2012 Comic-Con TBBT Panel. Since 2013, Cuoco has played William Shatner's (Star Trek) daughter in several Priceline commercials, acknowledging that her Big Bang co-stars—including Jim Parsons, Johnny Galecki, Simon Helberg and Kunal Nayyar—are big fans of Star Trek in the show. She dated Johnny Galecki who plays Leonard for the first two years of the show. She also appeared in Toyota Rav4 commercials and a wish granting genie.

In July 2014, she was working on the movie in New Mexico about a young man who comes home to confront his troublesome parents after his best friend from high school dies.

Her 2015-2017 contract was worth a total of $90 million.


Penny's new look after Kaley cuts her hair. Hair remains the same for all of Season 8.

In October 2014, Kaley was awarded with a star on the Hollywood Wall of Fame next to her idol, co-star and mentor John Ritter from "8 Simple Rules for Dating My Teenage Daughter".

In December 2019, she began voicing as the Pool on Young Sheldon episode, "Teenager Soup and a Little Ball of Fib".

She eventually got her own show called The Flight Attendant where she plays Cassandra Bowden, an alcoholic flight attendant who's the main character.


Kaley wanted to be on the cover of Cosmo since she was little.


Kaley and The 8 Simple Rules cast.


Kaley and Karl married 6/30/18.

Personal life[]

Cuoco currently lives in San Fernando Valley, California, with her German Shepherd named Duke and her Chihuahua-Dachshund mix named Petey. She was once in a relationship with Johnny Galecki, although it was not made public until after they broke up. The two remain friends. She became engaged to Josh Resnik in October 2011. In February 2012, Kaley revealed at the Academy of Television Arts and Sciences 21st Annual Hall of Fame ceremony that her engagement is off and she is back to being single.

She enjoys horseback riding, kickboxing, bowling and playing the drums. She once, presented Ellen DeGeneres with a table tennis paddle signed by The Big Bang Theory cast. She was a nationally ranked amateur tennis player, a hobby she took up when she was three years old until she switched to acting full-time on 8 Simple Rules in 2002.

Cuoco was married to professional tennis player Ryan Sweeting. They got engaged after three months of dating, and were married on New Year's Eve, December 31, 2013, in Simi Valley, California. She began to be credited as Kaley Cuoco-Sweeting in The Big Bang Theory since the episode The Convention Conundrum (S7E14). On September 25, 2015, Kaley and Ryan announced that they were divorcing after 21 months of marriage. Their divorce was finalized on May 6, 2016.

Kaley started dating horse rider Karl Cook in March 2016. On November 30, 2017, Kaley's 32nd birthday, they were engaged and got married on June 30, 2018.

Following in the steps of Mayim, Kaley visited Leslie Winkle aka Sara Gilbert on "The Talk" panel show on September 22, 2014.

Sheldon's Birthday Party Katey and Johnny

Two hundred episodes reached in Feb. 2016.

Kaley Cuoco married her fiancée Karl Cook on June 30, 2018. Her TV hubby and friend Johnny Galecki was in attendance.

On April 30, 2019, the series wrapped up with the final episode to a tearful finale. Her projects include providing the voice of Harley Quinn and playing a stewardess in "The Flight Attendant". Her TBBT castmate Melissa Rauch has also performed the voice of Harley Quinn of the Batman franchise.

Kaley married Karl Cook on June 30, 2018; however, they divorced each other on June 15, 2022. As of late 2022, Kaley has a boyfriend named Tom Pelphrey. After completing the second season of The Flight Attendant, she announced that she's expecting her first baby, a daughter, with her actor boyfriend in April 2023.


The last table reading was hard on Kaley.

Kaley Cuoco and Boyfriend - Baby Bump - Golden Globes 2023

Kaley showing off her baby bump - Jan 2023.

On March 30, 2023, she gave birth to her daughter, Matilda Carmine Richie Pelphrey.


  • Throughout the time Kaley was married to Ryan Sweeting, she was credited as "Kaley Cuoco-Sweeting" from "The Convention Conundrum" until "The Bachelor Party Corrosion", when she went back to being Kaley Cuoco.
  • She was never credited as Kaley Cuoco-Cook after marrying Karl Cook.
  • If Penny were real and had the same parents as her, Penny would be her twin due to only 2 day difference.
  • She said she'd do 20 more seasons of The Big Bang Theory. While that would please fans greatly, the show wouldn't go that many seasons for various reasons.
  • Kaley is willing to do a sequel series and continue the story of Penny.
  • Kaley is the youngest of the cast group, and approximately 13 years younger than Jim Parsons, who is the oldest of the group. If Kevin Sussman is included, then she's 15 years younger than the oldest.
  • Kaley had an uncredited cameo appearance in the season 3 Young Sheldon episode "Teenager Soup and a Little Ball of Fib" as the voice of the pool water in Sheldon's dream.
  • In Italian "Cuoco" means "Cook" so in her last marriage she translated her surname.



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