Kaley Cuoco's High Hair: Love It Or Leave It? (PHOTO)

Actress Kaley Cuoco's hair defied gravity with a Jeannie-inspired updo Thursday night in LA at a panel for her hit CBS sitcom The Big Bang Theory."

Cuoco, 24, is the lone female on the show. She previously starred on the John Ritter sitcom "8 Simple Rules... for Dating My Teenage Daughter."