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Stars were shining bright at the opening of celeb and fashion photographer Mario Testino’s latest exhibition, “Obsessed by You”. And Testino himself appeared pretty star-struck by his party’s celebrity turnout. “I’ve planning this for so long, look how many people came!” he told PEOPLE last night, at the luxe Phillips de Pury & Company auction house event in London. Shirtless waiters served Champagne and Pimm’s to a fashionable crowd that included designer Tom Ford and models Naomi Campbell and Claudia Schiffer, who, like many of Testino’s subjects, has a long-standing relationship with the photographer. “I’ve known Mario for 20 years. When he was not even Mario Testino yet,” said Schiffer. “He’s always been amazing.” And Ford concurred: “It’s hard to say which [photograph] is my favorite because I love Mario’s work. Every picture in these rooms is terrific.” Click here for more details the collection of 32 star-studded prints which will be on view — and for sale — from today through July 26th.