American actress Kaley Cuoco was born on November 30, 1985 in Camarillo, California. She started her career when she was just six years old, appearing in television commercials and also modeling occasionally. Her first major role was in the television movie Quicksand: No Escape, which was aired in 1992. She continued acting throughout the next ten years, appearing in television movies and guest roles in shows, while studying on the set.
In 2000, Cuoco landed her first regular television role, starring in the short-lived sitcom Ladies Man. In 2002, she joined the cast of the comedy 8 Simple Rules for Dating My Teenage Daughter, where she played the role of beautiful but dim-witted Bridget Hennessy. She stayed with the comedy until its end in 2005, despite the death of series lead (and her father in the series) John Ritter in 2003. When the show concluded, she joined the cast of Charmed, playing the role of troubled teener Billie Jenkins. In 2007, she joined the cast of another comedy, The Big Bang Theory. She played the role of Penny, a “cheesecake-scented goddess” who is the new neighbor of Leonard (Johnny Galecki) and Sheldon (Jim Parsons), and unknowingly attracts the two.
Cuoco is also an accomplished voice actress, having voiced characters in animated shows such as Loonatics Unleashed, Monster Allergy and Brandy & Mrs. Whiskers, where she voices one of the title characters. She is also actively involved in tennis, having taken it up as a hobby when she was a child, and later becoming a nationally-ranked amateur player.
- As a child, she did 6 ads for Barbie.
- She was home schooled on the set and at the age of 16, got her High School Diploma.
- Her hobbies include bowling, kick-boxing, playing the drums and horseback riding. On September 2010, she broke her leg after falling off her horse.
- On the show "8 Simple Rules... for Dating My Teenage Daughter", she played the older sister but is actually six years younger than co-star Amy Davidson.
- Her younger sister is named Briana Cuoco.
- She had a two-year relationship with "The Big Bang Theory" co-star Johnny Galecki.