Has modeled for Guess, Gap, Abercrombie & Fitch and Ralph Lauren.
Ex-stepdaughter of film director Brian De Palma. He took her to a talent agency when she was just seven years old and the rest is history.
Went to Kenter Canyon Elementary School and later Paul Revere Middle School. She also attended Palisades Charter High School for a brief time.
Steven Spielberg told Brian De Palma that she needed to be in front of the camera. With Spielberg's advice, Brian got her an agent.
Having never played the piano, Willa had to learn to play a very difficult Chopin piece for the film A Summer in Genoa (2008) (aka A Summer in Genoa).