Want Heidi Klum's body? Steal her personal trainer—and pop him into your DVD player! David Kirsch's Ultimate New York Body Plan will help you slim and sculpt your way to a flamin' physique. And though we all would love a body like Madonna, we'd also settle for just stealing her moves. Try her choreographer Jamie King's Rock Your Body workout, which hustles you through hip-hop moves to get your heart pumping.

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