 She later shared intimate details of her treatment following a single mastectomy. A native of Memphis, Tennessee, Doherty moved to L.A. with her family at the age of seven, and within a few years, she became an actor. As a child star, she worked steadily in such TV series as Little House on the Prairie. She detoured as a teen to the big screen in Girls Just Wanna Have Fun in the mid-'80s and Heathers as well. And then in 1990, she won her breakout role as Brenda Walsh in producer Aaron Spelling's hit teenage melodrama Beverly Hills, 90210.