Eva Mendes vs. Kim Kardashian: Whose Bod Do You Want?

Watch out, Kim Kardashian, you've got some fierce competition!

Just months after the Kourtney & Kim Take New York star became the butt face of Skechers' fitness footwear, rival brand Reebok signed on sexy actress Eva Mendes!

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The ads debuted this week, in which Eva lounges by a pool in her workout wear looking sporty yet oh-so-sultry.

"Between long days on the set and travel, it's not always possible to get a full workout in, so I have to make the time I have count," the Latina star says in a statement. "As an actress, being fit is important, and EasyTone is my great secret!"

So both ladies are working it big-time, but which one's got you sold: bootylicious Kim or toned Eva?

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