Mom and daughter Kathy and Nicky Hilton share the family’s astonishing ability to carry on a party. Just like club regular Paris, the two were spotted fist-pumping at The Pool After Dark at Harrah’s Resort and Casino in Atlantic City Saturday night. They wowed the crowd with dance moves, including the Robot. Mom and daughter partied until 2:30 a.m. before catching a limo back to town to attend the Veuve Clicquot Polo Classic on Governors Island the next day, where they appeared perfectly coiffed and composed.