Shannen Doherty br Joins '90210' Spinoff Doherty took to Instagram br to share the news. "Yes it's official. The real question is.... will we still be rocking those outfits. #bh90210" The actress will reprise her br role as Brenda Walsh. Others to star in the reboot include br Jason Priestley, Jennie Garth, Ian Ziering, Gabrielle Carteris, br Brian Austin Green br and Tori Spelling. Spelling also took to Instagram br to celebrate the news. "It's OFFICIAL....