Party Rock Was in the House Center Court at the U.S. Open Last Night

NEW YORK, NY - AUGUST 29: Stefan "Redfoo" Gordy (L) of the American electro duo LMFAO attends Day Three of the 2012 US Open at USTA Billie Jean King National Tennis Center on August 29, 2012 in the Flushing neigborhood of the Queens borough of New York City. (Photo by Elsa/Getty Images) Photo: Elsa/Getty Images

Days two and three of the tennis tournament saw Amanda Seyfried, Brooklyn Decker, and Rosie Perez among those watching the ballsy back-and-forth, while models filled the Moët & Chandon lounge. Also present: LMFAO's Stefan "Redfoo" Gordy, in desperate need of a headband to call his own. See all of their photos and more in our updated slideshow.