25-year-old Lindsay Lohan crashed the party for the Clint Eastwood-directed and Leonardo DiCaprio-headlined J. Edgar biopic.

With four days of freedom left before she spends a month in jail, Lohan insisted that she was an invited guest to the J. Edgar party. Page Six reports that she talked her way past security Thursday night at the Hollywood Roosevelt Hotel.

A source at the bash told Page Six, Lindsay was arguing with the security to let her in, dropping every celebrity's name to get in. She could be heard saying, 'I have to go and see Leo.' Eventually they let her in, but she made everybody uncomfortable. She was aggressive and random, storming around. She tried to get to Leo, but he was surrounded by his security and a posse of his friends.

Lindsay allegedly tried to get a photograph with Leo DiCaprio, but security shooed her away. She also asked to meet Oscar-winning producer, Brian Grazer, but was told he had already left the party by the time she arrived.

This has been a busy week for Lohan who posed nude at two photo shoots for Playboy magazine earlier this week. Lohan is scheduled to serve a 30-day sentence starting Nov. 9.

She allegedly showed up to the party still wearing her Playboy shoot hair and makeup and a sparkly little black dress, reported E!.

Lohan's rep told Page Sex, 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.