 Actress Shannon Doherty has died. Here's Margie's Arletta. Actress Shannon Doherty has died after fighting breast cancer, according to her publicist. Doherty was 53. What could be healthier than spending Friday night riding horses through Topanga Canyon? Shannon Doherty played Brenda on Beverly Hills 90210, Prue on Charmed, Renee in Mallrats, and one of the Heathers in Heathers. Doherty was the focus of tabloids for her temper, her conflicts with co-stars, and her three marriages.