Ha-ha, Los Angeles! You see what happens when you threaten to take the Oscars away from the pretty people? They come here to New York to party! Okay, so maybe it's more that Madonna just invited them all to come to New York, and you can't say no to Her Madgesty (she clearly knows how to do that Famke Janssen kill move from Goldeneye, and she likes it). But still, her Gucci/Malawi party was on Wednesday, and according to PageSix.com and Us Weekly, many celebs stuck around last night to attend Ashton Kutcher's birthday party at Gemma. Kutcher claims it was his 30th birthday, and to celebrate, Salma Hayek, François-Henri Pinault, Lucy Liu, Bruce Willis, and Kate Hudson all showed up. Madonna even sang "Happy Birthday" (okay, for all our bitterness, we must admit that's pretty effing cool)! Later in the evening they went to Socialista, where they were joined by Roberto Cavalli, Rebecca Gayheart, Molly Sims, Liv Tyler, and Gwyneth Paltrow. Nice job, Ashton! Way to party like it's still 1999!

Demi Moore's A-List Birthday Bash for Ashton Kutcher [Us Weekly]
Ashton's A-List B-Day [PageSix.com]