Jessica Simpson filmed the video for her deliciously infectious single, 'A Public Affair' (from her forthcoming album of the same name) this past weekend in California, and she invited a few of her celebrity friends along.

The clip, directed by 'X-Men' mastermind Brett Ratner, chronicles a night on the town with the singer and features cameos by Christina Applegate, Christina Milian, Eva Longoria, Maria Menounos, Ryan Seacrest and Andy Dick.

"Everything you think you know about Jessica Simpson -- forget it," Ratner said. "I am so proud to be a part of this moment with her as she's about to knock everyone off their feet."

Watch a sneek peak of the filming of 'A Public Affair'