Mischa Barton's
showing some serious skin! 

"The O.C"
actress attended the 8th Annual BritWeek Launch Party in Los Angeles on Tuesday.

Sporting a plunging, long-sleeved, black maxi dress, the blonde beauty looked California chic for the private event. 

While we rarely see Mischa out and about these days, she did open up to PEOPLE magazine last October about her very public mental breakdown.

After a DUI in 2007, Barton found herself under a 5150 psych hold at Cedars-Sinai Medical Center. 

"We thought, 'Work hard, play hard,'" the 28-year-old told the mag of her experience on the FOX soap.
"It was a full on breakdown," she added. "I was under enormous pressure."

And a lot of that "pressure" had to do with her weight. "It was always, 'She's too skinny, she must be sick,'" she revealed. "Then it was, 'She's too big.' I was never the right weight."

Well, we think the actress looks beautiful -- how do you think Mischa looks? Tell toofab in the comment section below and click "Launch Gallery" above to see how the rest of the gang from the "O.C." are doing today! 

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