The guru of the Hamptons’ famous “Day and Night” parties, Michael Wainstein, and his socialite wife, Julianne, held a lavish bris ceremony in the Meatpacking District for their son, Jagger, a few days back. The celebration boasted a guest list of 150, catering by Morimoto and music by celebrity DJ Josh Madden, and was topped off with a surprise call-in from Rabbi Yona Metzger, chief rabbi of the state of Israel. The event was held at the former Los Dados space.