Lindsay Lohan partying before jail sentence

Kasey Schefflin-Emrich

The Hollywood scarlet attended 'J. Edgar' after party in LA Thursday night

Lindsay Lohan at the 'Saints Row: The Third' video game launch held at the Supper Club on October 12 2011 in Hollywood, Los Angeles

Lindsay Lohans impending jail sentence hasnt put a damper on her partying ways.

TMZ reports the 25-year-old starlet, looking all glammed up, attended an after party for the Clint Eastwood-directed film, J. Edgar, starring Leonardo DiCaprio, at Hollywoods Roosevelt Hotel on Thursday night.

However, according to The N.Y. Post, Lohan was never invited to the celebration and actually talked her way past security, insisting she was invited and needing to see DiCaprio.

A source said she was eventually let in, but caused a scene being aggressive and random, storming around, which made the A-list attendances uncomfortable.

Lohan tried to talk to DiCaprio, but he was surrounded by security and a group of friends.

At one point during the night, Lohan sent her aides to demand DiCaprio, Eastwood, and Dustin Lance Black take a photo with her, but the attempt failed, because security shooed them away.

This is not how the night went down, according to a rep for Lohan, who said she did not crash, she was invited by a guest who attended the event. I am not aware of her asking for photos with Leo or Clint. She was never asked to leave.

Whether or not Lohan crashed the party or not, this is likely one of the last nights out before her 30-day jail sentence beginning on Wednesday, for violating the terms of her probation in a jewelry theft case by not attending court-ordered therapy sessions and being thrown out of the shelter where she was supposed to fulfill her community service obligations.!