"Beverly Hills, 90210" alums Shannen Doherty and Jennie Garth joined the cast of the CW's extremely-anticipated new series "90210" this past Saturday evening to celebrate the show's launch -- which, btw, is only 7 days away. Not unlike other Hollywood fetes, the party was très chic and invite-only. Click through this slideshow to see exclusive photos from the beachside bash.Tuesday, August, 26, 2008, 11:26 PM

Ryan Eggold, AnnaLynne McCord, Shenae Grimes, Jessica Stroup, Dawn Ostroff (President of Entertainment, The CW), Dustin Milligan, Tristan Wilds and Michael Steger arrive at the "90210" Launch Party on Saturday, 8/23 in Malibu, California. The CW/Jaimie Trueblood - Tuesday, August, 26, 2008, 11:26 PM

Shannen Doherty poses with producer Gabe Sachs at the "90210" Launch Party on Saturday, 8/23 in Malibu, California. The CW/Jaimie Trueblood - Tuesday, August, 26, 2008, 11:26 PM

Shenae Grimes arrives at the "90210" Launch Party on Saturday, 8/23 in Malibu, California. The CW/Jaimie Trueblood - Tuesday, August, 26, 2008, 11:26 PM

AnnaLynne McCord arrives at the "90210" Launch Party on Saturday, 8/23 in Malibu, California. The CW/Jaimie Trueblood - Tuesday, August, 26, 2008, 11:26 PM

Lori Loughlin arrives at the "90210" Launch Party on Saturday, 8/23 in Malibu, California. The CW/Jaimie Trueblood - Tuesday, August, 26, 2008, 11:26 PM

Tristan Wilds, Michael Steger, Shenae Grimes, Jessica Stroup and Ryan Eggold are all smiles as they arrive at the "90210" Launch Party on Saturday, 8/23 in Malibu, California. The CW/Jaimie Trueblood - Tuesday, August, 26, 2008, 11:26 PM

Kellan Lutz (right) and Tristan Wilds arrive at the "90210" Launch Party on Saturday, 8/23 in Malibu, California. The CW/Jaimie Trueblood - Tuesday, August, 26, 2008, 11:26 PM

Joe E. Tata arrives at the "90210" Launch Party on Saturday, 8/23 in Malibu, California. The CW/Jaimie Trueblood - Tuesday, August, 26, 2008, 11:26 PM

Tristan Wilds, Michael Steger and Shenae Grimes pose in front of the fire pit at the "90210" Launch Party on Saturday, 8/23 in Malibu, California. The CW/Jaimie Trueblood - Tuesday, August, 26, 2008, 11:26 PM

Shannen Doherty and John Maatta (Chief Operating Officer, The CW) at the "90210" Launch Party on Saturday, 8/23 in Malibu, California. The CW/Jaimie Trueblood - Tuesday, August, 26, 2008, 11:26 PM

Jennie Garth and David Stapf (President, CBS Paramount Network Television) at the "90210" Launch Party on Saturday, 8/23 in Malibu, California. The CW/Jaimie Trueblood - Tuesday, August, 26, 2008, 11:26 PM