By Breaking Celebrity News Staff

Ryan Lochte's weekend long belated birthday bash continued in Las Vegas Saturday night with a pool party at Azure at The Palazzo.

Lochte -- who turned 28 on August 3 -- and his entourage spent the day in a private cabana in the secluded luxury pool club.

After flaunting his abs in a patriotic swimsuit on Azure's blue carpet with one of his Olympic gold medals, the swimmer jumped into one of the pools to pose for photos with his adoring -- mostly female fans.

"Ryan then went back into his cabana and made an impromptu outfit change into a bright pink Speedo!" an eyewitness tells us.

He must have a closet full of Speedos, because on Friday his color of choice was white for the first day of his birthday celebration.

Saturday's partying was capped off with a towering birthday cake being presented by servers in gold bikinis.

It's good to be Ryan Lochte.

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