Kaley Cuoco is famous for playing Penny on "The Big Bang Theory," but the super successful 12-season show was just a highlight of the actress' decades of hard work and career determination.

Born on November 30, 1985, Cuoco was an aspiring actress from her earliest days in Camarillo, California, making fond memories on the stage when she was just 5. She landed several small roles before even hitting the double digits. Eventually, she would become a breakout star on a few popular television series, including "8 Simple Rules" and "Charmed," though she's likely best known for her time on the popular CBS sitcom "The Big Bang Theory."

Winning admirers with her refreshing transparency and down-to-earth attitude, Cuoco is one fiercely independent female who is almost as anti-Hollywood as it gets while having still achieved the ultimate Tinseltown success story. Here's a look at Kaley Cuoco's stunning transformation over the years.

Kaley Cuoco is famous for playing Penny on "The Big Bang Theory," but the super successful 12-season show was just a highlight of the actress' decades of hard work and career determination.

Born on November 30, 1985, Cuoco was an aspiring actress from her earliest days in Camarillo, California, making fond memories on the stage when she was just 5. She landed several small roles before even hitting the double digits. Eventually, she would become a breakout star on a few popular television series, including "8 Simple Rules" and "Charmed," though she's likely best known for her time on the popular CBS sitcom "The Big Bang Theory."

Winning admirers with her refreshing transparency and down-to-earth attitude, Cuoco is one fiercely independent female who is almost as anti-Hollywood as it gets while having still achieved the ultimate Tinseltown success story. Here's a look at Kaley Cuoco's stunning transformation over the years.