A couple "Real Housewives" flaunted their curves in Las Vegas this weekend!

Former "Real Housewives of New York" star Kelly Bensimon hosted a pool party presented by Hpnotiq this weekend at TAO Beach on Saturday, where she showed off her 44-year-old body in a revealing one-piece.

But she wasn't the only reality star hosting a party this weekend.

"Real Housewives of Orange County" star Alexis Bellino and her husband Jim Bellino had a pre-4th of July bash on Friday at the Encore Beach Club -- where Alexis one-upped Kelly by wearing a sexy American flag bikini while posing by the pool!

Whose swimsuit do you like more?

And check out all the summer's hottest beach bods in the gallery above!

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