Fergie - Taylor Swift

After doing a bit of window shopping in New York City's Soho neighborhood, Taylor Swift met up with Fergie in Central Park to rehearse for the the Black Eyed Peas and Friends Concert 4 NYC to benefit the Robin Hood Foundation. Although it was a sunny afternoon, the event was later postponed due to stormy weather. Click through to see Sienna Miller, Gisele Bundchen, Cory Monteith and more at last night's hottest parties!