Call him the Hamptons host with the most. Less than a month after ACRIA's Cocktails at Sunset, Steven Klein transformed the backyard of his Bridgehampton estate into an event space again on Saturday night. The occasion: a celebration of the new Ellen P. Hermanson Breast Health Center at the Southampton Hospital. Co-chaired by the photographer's sister Hope Klein Langer and Style.com's own Candy Pratts Price, the benefit was dubbed HEAT and lived up to its name.

The dress code was black, white, and pink, but it being a fashion crowd, more than a few guests took some sartorial liberties. Daphne Guinness—"looking conservative" (her word, not ours) in a ball gown and spiked red pumps—mingled with André Balazs, while Donna Karan—sporting Far East garb—walked around on the arm of Montauk surfer dude and designer Tracy Feith. And then there was Kim Cattrall in summer-casual faded jeans, auctioning off a day on the set of the new Sex and the City sequel. After some very Samantha-like remarks, it went for a cool 20K. Unlike some charity parties, HEAT was a rager to the finish. Just before last call, none other than Lindsay Lohan swooped in (yes, she played by the rules and wore black). "Lindsay's always known how to make an entrance," Klein said.

To bid online for a Style.com internship and other lots to benefit the Ellen Hermanson Foundation, click here. Your last chance to win is August 25.

— Derek Blasberg