Mischa Barton was back in front of the cameras for her new TV show on Monday.

Just weeks after her mysterious stay at a Los Angeles hospital for undisclosed medical reasons, the actress seemed in good spirits on the New York set of The Beautiful Life.

Looking curvy in a spangly gold dress, Mischa petted a dog, nibbled on fruit from the buffet and smoked between takes.

However, she was AWOL when Ashton Kutcher - a producer on the show - visited the set with wife Demi Moore.