Mischa Barton has gone from various shades of brunette to a very blonde color. The new blonde shade looks quite flattering in this photo but see a less flattering larger photo perspective at Faded Youth. One of the readers there says;

Maybe it’s the lighting, but the blonde looks badly done. Lindsay’s blonde looks badly done too. I do better in half an hour with boxes of Loreal Preference and Clairol Highlights from the drug store, and they spend half their lives and hundreds, maybe thousands for a crappy dye job like that?