The 25-year-old actress is being treated at the Cirque Lodge Treatment Center in Utah

By EW Staff
February 07, 2008 at 05:00 AM EST
Steve Granitz/

(FROM PEOPLE.COM) – Kirsten Dunst has checked into the Cirque Lodge Treatment Center in Utah, the same facility that treated Lindsay Lohan and where Eva Mendes recently checked in. quotes a source saying, ”People were pushing her to go in there but there was no intervention… She has been partying hard for a while and I’m sure the Heath Ledger thing put people over the edge.” Dunst most recently starred in last summer’s Spider-Man 3, and she will next appear in the romantic comedy How to Lose Friends and Alienate People later this year. (