So we got Shannen Doherty to come back as Brenda but just as we love seeing her she is leaving. Dont know if I can speak for everyone when I say, she is mostly why I watch the new 90210. She has expressed that she will do what WE the fans want her to do. If you want to see Shannen continue as Brenda Walsh please sign the petition. We missed her and its so good to have her back, lets keep it like that. Keep Brenda, she is 90210!!!!