Willa Joannachance Holland (born June 18, 1991) is an American actress, voice actress and model. She is best known for her role as Kaitlin Cooper in the Fox teen drama The O.C., Agnes Andrews in The CW series Gossip Girl, Aqua in Kingdom Hearts, and Thea Dearden Queen / Speedy in Arrow.
Holland was born in Los Angeles, to cinematographer Keith Holland and actress Darnell Gregorio-De Palma. Her mother was remarried to director Brian De Palma from 1995–97. She grew up with two sisters: Brianna Holland (b. 1988) and Piper De Palma (b. 1996). Holland attended Palisades Charter High School for only six weeks because her career was taking off and school peers were dismissive of her acting pursuits.