Eagle-eyed fans of teen TV drama The OC claim to have caught sexy star Mischa Barton exposing herself on an episode aired in America last week (ends11NOV05).

According to PageSix.com a number of viewers allege Barton's nipple slips out of her pyjamas while she is getting out of bed and some have complained to the Federal Communications Commission (FCC).

A spokesperson for network Fox says, "We are not aware of any complaint being filed."