 She actually started acting as a child. She landed her big break. A lot of people don't realize this, but she was on Little House on the Prairie with Michael Lander from 1982 to 1983. That led to a gig on the family drama Our House from 86 to 88 and the dark comedy Heathers in 1989. Of course, she became a household name the following year thanks to Beverly Hills 90210, but she earned a reputation for being difficult at times, and she left the show after her fourth season. Shannon Dougherty, only 53.