Check Out Mischa Checking Out

5/29/2007 4:20 PM PDT
Cameras spotted Mischa Barton leaving Sherman Oaks Hospital late Monday night after her highly-publicized "adverse reaction to prescription medication."

The former "OC" star was at a Memorial Day BBQ with some friends when she had a couple of cocktails. Only problem -- she was on antibiotics. Oops!

Barton was at the hospital for nearly five hours with her mom and sister by her side. She left around 10:00 PM sporting a hospital gown and a pair of slippers. Nothing but the latest in hospital chic for Mischa!