Elizabeth Mitchell (aka the girl that got it on with Angelina in Gia) has joined the cast of ABC’s hit drama “Lost” as a possible new love interest for Matthew Fox’s character, sources said.

Mitchell next will be seen opposite Tim Allen in the feature “The Santa Clause 3: The Escape Clause,” which opens November 3. Her other credits include HBO’s “Gia,” in which she played Angelina Jolie’s lover, and a recurring role on “ER.”