Actress Kirsten Dunst has prompted speculation she is losing her battle with alcohol addiction just five weeks after leaving rehab, according to reports.

The 26-year-old star was reportedly admitted to Cirque Lodge earlier this year after a wild week of partying at the Sundance Film Festival in Utah, prompting family and friends to seek intervention. But, during a break from filming while on location in New York to celebrate her birthday earlier this month, she was allegedly seen drinking and dancing with pals - including The Strokes' Fabrizio Moretti - at a local bar.

A source tells Star magazine, "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."

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(This news article provided by World Entertainment News Network)