Kirsten Dunst is said to have reverted to old ways after a stint in rehab earlier this year.

Kirsten checked into the Cirque Lodge facility in Utah in February after a week of “erratic behaviour” at the Sundance Film Festival and was reportedly treated for depression and other mental health issues linked to alcohol addiction.

On checking out, she initially moved to northern California to avoid the temptations of Los Angeles - but has now reportedly run into similar temptations in New York, where she is filming All Good Things.

A source told Star magazine that the actress was spotted celebrating her birthday with friends in the city earlier this month: “She got worse as the night went on. She started out pretty chilled, but hours later she was dancing and jumping like a crazed animal.

“She indulged in any guy who would have her attention. She also went up to several guys and started flirting with them hard-core.

“She was just completely out of it. It was obvious that whatever happened in rehab didn’t stick.”