Photos - Hayden Panettiere at the 2008 Emmys: Photo Gallery

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Hayden Panettiere at the 2008 Emmys: Photo Gallery

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Hayden Panettiere at the 2008 Emmys: Photo Gallery

Actress Hayden Panettiere arrives at HBO's Emmy Awards after party on September 21, 2008 in West Hollywood, California..HBO's Emmy Awards After Party - Arrivals.The Plaza at the Pacific Design Center.Hollywood, CA United States.September 21, 2008.Photo by Mark Sullivan/WireImage.com..To license this image (55800956), contact WireImage.com

Why Women Want to Have Sex
Women have sex for numerous reasons, including love, pleasure, jealousy, loneliness, physical attraction, boredom, curing a headache and even duty. These reasons are not arbitrary and most come with an evolutionary explanation. That's the word from psychologists Cindy Meston and David Buss, both professors at the University of Texas at Austin, who wrote the book "Why Women Have Sex." More »

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