Jennie Garth Says Shannen Doherty’s Death Made Her Think of Luke Perry

Shannen Doherty and Jennie Garth. John Shearer/WireImage Jennie Garth’s grief over Shannen Doherty’s death was compounded by the fact that she’s already lost another beloved Beverly Hills, 90210 costar far too soon. “[Luke Perry] was the first person I thought of when I heard the news [of Shannen’s passing],” Garth, 52, said during the Thursday,…