Last night in NYC, Dakota Fanning and Leelee Sobieski got dolled up for the 2012 Tribeca Film Festival Vanity Fair Party, Kevin Bacon and Jon Hamm hung out at the Food Bank For New York City's 2012 Can-Do Awards, Nate Lowman and Spencer Sweeney stopped by the Public Art Fund Spring Benefit, Serefina opened in Meatpacking, and so much more. Last night's parties were all about Leelee Sobieski's Jil Sander dress! (No? Well, it should be.)

[Photos: Dakota Fanning, Drena De Niro, Rachel Roy, Leelee Sobieski]

Daniel Benedict Graydon Carter Ivanka Trump Timo Weiland Macy's Mark Baker Mick Rock Peter Martins Mario Batali Tory Burch Amanda Hearst Ramona Singer Duffy Susan Shin Dakota Fanning kevin bacon donna karan Gavin Brown Francisco Costa Melissa Berkelhammer Wendy Diamond Nate Lowman Paper Magazine helena christensen Rachel Roy Gayle King Kate Davidson Hudson Jill Hennessy Andrew Saffir Olivia Chantecaille Amy Fine Collins Gavin Rossdale Goldie Hawn Alexis Bryan Morgan Adelina Wong Ettelson Sharon Bush Julia Louis-Dreyfus Mark Gilbertson Patricia Clarkson Michael Douglas Anne Burrell Stanley Tucci Wendi Murdoch Cipriani Wall Street Matthew Settle Kyra Sedgwick Robert DeNiro Grace Hightower Fernanda Niven Nicole Trunfio Michael Bloomberg Tom Colicchio Bettina Prentice Catherine Zeta Jones Wendy Williams Karen Duffy Lily Cole Bob Balaban taylor olson Jean Shafiroff Muffie Potter Aston Glenda Bailey Salmon Rushdie Chelsea Leyland Diane von Furstenburg Yvonne Force Villareal Katie Couric The Plaza Hotel Walt Frazier Michael K. Williams Jessica White Christian Leone Jon Hamm Pamela Joyner Ray Kelly Ron Perelman Michael Stipe Ashley Bush Leelee Sobieski Alberta Ferretti Jennifer Westfeldt jerry saltz Amanda Burden Charlie Rose Flo Fulton Kyle MacLachlan Alison Brod Benjamin Millepied Paul Arnhold Karen Watkins Vittorio Assaf Slate Stephen Baldwin Diane Neal Rob Pruitt Nina Griscom Billy Crystal Christine Quinn Tinsley Mortimer