The New York Post reports Sean ‘P. Diddy’ Combs returned to the Hamptons after shunning the area for the past year. Combs and a huge entourage were at Club NV in East Hampton last Saturday, spending big bucks on clubgoer A.J. Calloway after he found out it was his birthday. Puffy sang him ‘Happy Birthday’ and bought shots for the whole house.”It cost thousands,” said a spy.