It was the biggest party ever thrown by the Obamas.
And Britain's David and Samantha Cameron had access all areas, including the Truman Balcony and the Blue Room, where the Prime Minister signed the guest book.
The evening's entertainment was led by John Legend and guests including George Clooney, the cast of Downton Abbey, Miramax titan Harvey Weinstein and magazine editor Anna Wintour.
Not since the 'Camelot' era of Jackie Kennedy have glamour, power and Hollywood glitz combined to such dazzling effect, and a White House photographer was there to capture all the details.
More on the Camerons' US visit