TROUBLED STARLETS

Report: Mischa Barton in Psych Ward

Actress Mischa Barton is skipping Thursday's world premiere of her new movie Homecoming, and some say the culprit is a mental-health crisis. After police removed Barton from her home for "medical issues," unconfirmed reports emerged that Barton was under a "5150 involuntary psychiatric hold," the same medical maneuver once used for a flailing Britney Spears. Homecoming director Morgan Freeman said he was "saddened" that Barton would miss the event and praised her performance. Her representatives have declined to comment on Mischa's mental state, but arrests in recent years for driving under the influence and marijuana possession have L.A. tongues wagging.