Kate Hudson may be changing zip codes from Malibu to 90210! Although her rep denies that Kate will be on the show, an insider tells In Touch that the A-list actress has agreed to make a rare TV guest appearance on an upcoming episode of The CW drama as a personal favor to her good friend, actress Sara Foster. “Kate’s a movie star and doesn’t usually do TV shows,” an insider tells In Touch. “But she and Sara are pals and have always wanted to work together, so Kate said she’d do it.” Sara recently joined the cast of 90210 as Jen, the sexy older sister of AnnaLynne McCord’s character, Naomi. Kate was a fan of the original show, calling herself “a total 90210 girl.”