Photo SpecialStars' Summer Fun

Beachside bashes! Romantic romps! See how Tara, Jessica, Diddy and other celebs spent the hottest season. By Emily Fromm and Caryn Midler

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ENCINO, CALIF.

Although Jessica Simpson spent much of the summer promoting her movie The Dukes of Hazzard, she lets loose in July with a mouthy pal at her 25th birthday party. "The entire night was perfect," she told PEOPLE after the bash held at her parents' house. "I'm still smiling."

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