The beloved Beverly Hills 90210 star Shannen Doherty passed away Saturday following her well-publicized fight against cancer. She was 53 years old. Doherty, famous for her memorable portrayal of Brenda Walsh in the ’90s teen hit Beverly Hills 90210, also starred in Charmed and won over viewers with her powerful acting and commanding on-screen presence. “It is with a heavy heart that I confirm the passing of actress Shannen Doherty. On Saturday, July 13, she lost her battle with cancer after many years of fighting the disease,” stated her publicist Leslie Sloane, as reported by People magazine….