Abigail Breslin and Cameron Diaz Are "Sisters"

Cameron Diaz and Abigail Breslin film scenes for their latest movie My Sister’s Keeper on a beach in Malibu on Wednesday.

During one scene Cameron, 35, and a male co-star were play fighting and kissing while Abigail, 11, was filmed holding an umbrella as she walked along the ocean.

My Sister’s Keeper is a movie about a young girl (Abigail) who sues her parents for the right to make her own decisions about how her body is used when a kidney transplant is planned in order to potentially save her older sister. Cameron Diaz plays Sara Fitzgerald, Abigail‘s mom in the movie.

More pics of the two “sisters” filming scenes at the beach…