Beverly Hills, 90210 grads Shannen Doherty, Gabrielle Carteris and Luke Perry won't be at former costar Tori Spelling's wedding to actor-writer Charlie Shanian, which is rumored to be taking place this weekend in Malibu, Calif. Why? According to USA Today, they weren't invited. "I love Tori, but we don't hang out," says Carteris. "I haven't seen her, but I hear [Charlie's] a nice guy." So, who will be there? Tiffani Thiessen, Jennie Garth, Jason Priestley and Ian Ziering. What's Nat? Chopped peach pits?