The sexy duo show off their moves in New York City. Plus: Ashlee, Beyoncé and more

WIZ KID

Jason Biggs – at Heidi Klum's party – dressed as Dorothy from the Wizard of Oz (note the ruby sneakers). His date? His girlfriend of one year: "We decided on Dorothy and the Tin Man," said Biggs, "but then my girlfriend decided on Tin Man, so I ended up wearing a skirt."