“This is a fantastic turnout for the middle of summer,” marveled a very pregnant Vanessa Getty as she propped herself up on the perfume counter at Prada’s new San Francisco flagship Tuesday night. Getty and roughly 700 other city swells packed the store for its opening night bash, nibbling on an array of hors d’oeuvres by French Laundry’s Thomas Keller. Architect Abigal Turin was marveling at the store’s chic, sleek interior. “It’s signature Prada, with touches of the original Milan Galleria store, but it feels very California,” she noted. “Spectacular,” said plastic surgeon Brunno Ristow. Also nibbling on foie gras mousse and smoked duck canapés were O.J. Shansby, Kate Harbin, Leigh Matthes, Marissa Mayer, Lexie Fisher, Yurie Pascarella, Juliette de Baubigny, Emily Martin, Cecilia Harris and Alyson Jackson.