Mischa's been placed under an involuntary psychiatric hold (also known as a 5150) by the Los Angeles Police Department and is currently at Cedars-Sinai Medical Center, reports Access Hollywood.
The next 72 hours could bring serious soul searching and seriously hot photo-shoots of her in white. Defamer says she missed her comeback in New York tonight by missing the premiere of her new movie, Homecoming. Or, just maybe, the comeback starts with 72 hours of crazy...
And in all seriousness, we all hope she's just "actor crazy" which can be fun and exciting, and not anything else, which is definitely not. FLiXER believes a healthy twiggy actor, is a happy twiggy actor.

Mischa Barton - The grass is greener.