The gorgeous British-born actress looked fab in her simple black trousers and top, teamed with the colourful cropped jacket as she attended the Dahlia Wolf fashion community launch in LA on Tuesday night (22 October).
Mischa's red carpet appearance came a week after she opened up in a new interview about the dark times she experienced a few years ago after shooting to success in The OC.
We all fell in love with Mischa and her impeccable style when she starred as Marissa Cooper in the teen drama, but behind the scenes she was struggling to cope with her huge stardom and the pressures of the Hollywood party life.
She told People magazine: "We thought, 'Work hard, play hard'. It was a full-on breakdown. I was under enormous pressure."
Thankfully, the 27-year-old is now happy and healthy and focused on the future, which includes several movie and TV projects in the pipeline.
Mischa can next be seen in supernatural thriller I Will Follow You Into The Dark, which revolves around a woman coming to terms with the deaths of her parents when she meets an alluring and mysterious man.
Watch a trailer for the movie below: