Both Shannen Doherty and Tori Spelling will be back at the zip code which made them famous–90210. Doherty, who played Brenda Walsh on the original 90210, will return for another episode of the CW’s 90210. Another series alum Tori Spelling, who played Donna Martin, also recently signed on to appear in three upcoming episodes. Doherty earlier appeared in a story arc at the beginning of the season in which Brenda was reunited with her friend Kelly Taylor (Jennie Garth) and revealed that she can’t have children. (Photo: WENN)