“We wanted it to be a relaxed, intimate dinner for friends and family,” said Costa. The emphasis seemed to be on the latter. Carine Roitfeld brought son Vladimir; Peter and Jacqui Getty arrived with daughter Gia Coppola, and model Cordula Reyer’s date was her son, Ben. Bryce Dallas Howard came without pop, Ron, but was right at home with actress Virginia Madsen, whose performance in “Sideways” was a hot topic. Even newbies to the circle, such as hunky actor Olivier Martinez, who dropped in on the spirited after-dinner party on the balcony, were welcomed into the fold fast.