03/04/2011 at 12:00 PM EST
Rocker John Mayer
encouraged several ladies to put down their glasses of sparkling wine and take tequila shots with him during a bash at the Boom Boom Room
inside N.Y.'s Standard Hotel following a Cinema Society screening of Happythankyoumoreplease
. But the talk of the party was a leather-clad Ed Westwick
, also in a leather cap, who worked the room and spent some time talking to Billy Joel
's ex-wife Katie Lee
outside the VIP lounge.