Lori Loughlin (Summerland, pictured) has been cast in the Rob Thomas-produced Beverly Hills, 90210 spinoff currently in development at the CW. She’ll play Celia Mills, mother to teenage Annie, who will be played by Shenae Grimes (Degrassi: The Next Generation) and Dixon, Annie’s yet-to-be-cast twin (a la the original series’ Brenda and Brandon Walsh). The actresses join a cast that also includes Dustin Milligan (The Messengers), who plays Ethan the popular guy, and Annalynne McCord (Nip/Tuck), who plays Naomi the rich, popular girl.

CBS/Paramount, which is producing the much-anticipated drama for the CW, is expected to shore up casting on the pilot soon. One insider says Hilary Duff was given a script to read, but any discussion about her joining the cast is premature.