Willa Holland Biography
Willa Joanna Chance Holland (born June 18, 1991) is an American actress and fashion model. She is best known for her role as Kaitlin Cooper, Marissa Cooper's devious younger sister, on the television series The O.C. She also appeared as Agnes Andrews on The CW series Gossip Girl. She most recently provided the voice for Aqua in Kingdom Hearts Birth by Sleep.