Kristin Cavallari showed off her bikini bod over the weekend -- a few after Heidi Montag debuted her post-surgery bikini bod.

VIDEO: Heidi Montag struggles to eat a burger because of surgery

Cavallari told UsMagazine.com she was surprised at how Montag now looks, but "if she's happy, that's all that matters."

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Who looks better in a bikini?

Kristin
Heidi
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Who looks better in a bikini?