Michael Phelps Throws Retirement Party in Vegas

You would've thought partying was an Olympic sport the way Michael Phelps, 27, took over Las Vegas over the holiday weekend. RELATED: Michael Phelps Attempts to Break Record The most vivacious retiree in the world began his retirement bash by raging at Surrender Nightclub on September 1 and continued his celebration at Encore Beach Club the following day.

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