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There wasn't one frown in sight for Thursday night's 2009 Operation Smile Event at Cipriani on Wall Street. Event chairs, committee members, and supporters in attendance included Olivia Palermo, Scott Buccheit, Lydia Hearst, singers Ciara and Ryan Leslie, Adrienne Bailon, Donald Trump Jr., John Sailey, and Sabine Singh. Guests sat down for dinner, drinks and performances by Vanessa Carlton and America's Got Talent winner Bianca Ryan while supporting the medical charity that helps improve the health and lives of children all over the world. More party photos and red carpet pics by MICHAEL PLUNKETT for PMc below...

Olivia Palermo

Timo Weiland

Lydia Hearst, Ciara, Sessilee Lopez

Donald Trump Jr., Vanessa Trump

Vanessa Carlton