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Stars' On-the-Go Fitness Tricks!

Shopping! Dancing! Street hockey! See how Ali Larter, Kim Kardashian, Kate Middleton and more get slim without the gym

KATIE HOLMES MAKES A SPLASH

If serious summer heat has you dipping a toe into the pool or ocean, why not take the full plunge? A solid hour of swimming burns around 500 calories, and a 15-minute frolic in the waves (à la Katie and her daughter, Suri!) will let you indulge in an ice pop later.