Happy Birthday Jen in advance. Jennifer Aniston had a star studded birthday party on Saturday at her new Beverly Hills home. And before you start counting the candles on the picture cake I’ll tell you that the former “Friends” star will be turning 40 on 11^th of Feb. media and paparazzi were kept away from this party.

But the sources reveal that the party began at 7.00 pm and lasted till 2.00 am. The guests included Oprah Winfrey, Sheryl Crow, David Arquette, Courtney Cox, Tobey Maguire, Jen Meyer, Laura Dern, Kevin Nealon, Chelsea Handler, Tom Hanks and Rita Wilson. The former beau Brad Pitt and his current GF Angelina Jolie were not present. Jennifer Aniston with his beau John was into each other that night and looked very happy. Jen got John warmed up for his performance at the Grammy Awards at the party.