Klum looks picture perfect in her green suit while on a family vacation in Mexico. Plus: Jessica Simpson, Nick Cannon & Mariah Carey, Justin Timberlake and more

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GOOD OL' TIME

Jessica Simpson shares a laugh with ZZ Top bassist Dusty Hill during a rehearsal of "These Boots Are Made for Walkin'" at Marine Base Camp Pendleton near San Diego on Thursday. Simpson – who will be younger sister Ashlee's maid of honor at her upcoming nuptials to Pete Wentz – later joined Snoop Dogg, Janet Jackson, Ne-Yo and Pamela Anderson at the three-hour concert for nearly 35,000 fans.