Here's what you missed at the hottest summer kickoff parties in the Hamptons
Oh, and a DJ set by Vice President Joe Biden's nephew, Jamie Biden. Can't forget that.
The 2015 summer season got off to a roaring start as scenesters like Mia Moretti and Jessica Hart congregated in Montauk while lifestyle gurus and old money RSVP'd to quieter affairs in Southampton and Sag Harbor.