By Caitlin Petreycik
Updated Jul 17, 2012 @ 12:30 pm
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Credit: Ramey Photo; AKM-GSI; INF; Xposure Photos

Summer's heat wave is in full effect—and celebrities know it! Maria Menounos, Elle Macpherson, Julianne Hough, and Eva Longoria are just a few of the stars who hit the beach to soak up some sunny rays this week. See their bikini style and plenty more in the gallery now!