Mischa Barton - The O.C.

Mischa Barton left ‘The O.C.’ after three seasons when her character, Marissa Cooper, was killed off.

Years later, she admitted that her character was not an easy one to portray.

She told E! News: “It wasn't an easy character for me to play because it wasn't me, which is why I think people liked it or thought Marissa was funny and latched on to her. They felt like this is entertaining because she's all over the place and who is this girl? It's like because this New York girl was trying to play this ditzy L.A. rich kid, you know?”