Mischa BartonMischa Barton threw up on the pavement outside a New York club last week - but then went right back into the club to keep partying.

Mischa was spotted at The Anchor in the city last Thursday night with Kirsten Dunst and The Sopranos star Jamie-Lynn Sigler.

A source told Us Weekly: “At one point Mischa suddenly ran out the door and threw up outside. Jamie-Lynn ran outside after her, but it wasn’t a big deal. They were laughing.”

“After she had been sick, they just went back inside and continued to party.”

The trio stayed at the club until around 3am with the New York Post reporting that Mischa was “tired and emotional” by the end of the evening and she needed help leaving the venue.