Hollywood celebs joined American based euro royals on Saturday to celebrate socialite Diana Jenkins birthday. Hollywood glitterati included Sean Penn, Salma Hayek, Anthony Kiedis, Lindsay Lohan, Slash, Paris Hilton, Nikky Hilton, Jeremy Piven, Shannon Doherty, and Jessica Biel with her beau Justin Timberlake. Among the European elite were billionaire Nicolas Berggruen, Zeta Graff, Alexander von Furstenberg, Tamara Mellon, and Hayek's hubby Francois-Henri Pinault. The party was rounded out by such Hollywood staples as Lawrence Bender, Peter Berg, David Foster, Justin Murdoch, Brian Quintana, and Brett Ratner. The star-studded crowd was entertained by singers Eric Benet and Kid Rock.

Hollywood celebs joined American based euro royals on Saturday to celebrate socialite Diana Jenkins birthday. Hollywood glitterati included Sean Penn, Salma Hayek, Anthony Kiedis, Lindsay Lohan, Slash, Paris Hilton, Nikky Hilton, Jeremy Piven, Shannon Doherty, and Jessica Biel with her beau Justin Timberlake. Among the European elite were billionaire Nicolas Berggruen, Zeta Graff, Alexander von Furstenberg, Tamara Mellon, and Hayek's hubby Francois-Henri Pinault. The party was rounded out by such Hollywood staples as Lawrence Bender, Peter Berg, David Foster, Justin Murdoch, Brian Quintana, and Brett Ratner. The star-studded crowd was entertained by singers Eric Benet and Kid Rock.