[Grace Jones wows the crowd at Matthew Williamson for H&M Launch Party. Photo by BILLY FARRELL for PMc]

Last night, friends and fans of Matthew Williamson took over Pier 17 to celebrate his new summer collection for H&M. The party made for some amazing photo ops.  Expect our full coverage of the event, which brought out big names like Mary-Kate Olsen, Dree Hemingway, Chanel Iman, Helena Christensen, Matthew Schwimmer, Olivia Palermo, Patricia Field, Adrien Brody, and basically anyone that's anyone, later today.  For now though, feast your eyes on some of our favorite shots...

[Lily Donaldson, Mary-Kate Olsen, Daria Werbowy, Matthew Williamson. Photo by DAVID X PRUTTING for PMc]

Matthew Williamson, Chanel Iman

Matthew Williamson, Mary-Kate Olsen, Hedi Ferjani, Erin Fetherston