serena scott thomas buffy Serena Scott Thomas: Bond girl, 'Buffy' watcher joins 'William & Kate' on LifetimeThe Lifetime original movie about the romance between Prince William and his bride-to-be Kate Middleton is quickly adding cast members. The latest is Serena Scott Thomas, reports Access Hollywood.

Thomas will play Carole Middleton, Kate’s mum. She is best known for her role as Dr. Molly Warmflash in the 1999 James Bond movie “The World is Not Enough” alongside Pierce Brosnan. She was also featured on the short-lived WB program “Summerland.” But we know her best as Gwendolyn Post, Faith’s crazy watcher on “Buffy the Vampire Slayer.” Her sister is Oscar-nominated actress Kristin Scott-Thomas of “The English Patient” and “Gosford Park.”

Thomas joins Nico Evers-Swindell as Prince William, Ben Cross as Prince Charles, Camilla Luddington as Kate and Richard Reid, who is playing a fictional friend of William’s from college.

Lifetime is trying to get the movie made before the real-life April 29 wedding in Westminster Abbey, London.