The most decorated Olympian of all time, Michael Phelps, took over Surrender Nightclub and Beach Club in Las Vegas to officially mark his retirement from professional swimming. Phelps was joined by fellow Olympic swimmer Allison Schmitt, but his uber hot girlfriend, Megan Rosee, was noticeably missing.
The soiree lasted over the span of two days, with Michael partying with DJ Afrojack on Friday at Club Surrender and David Guetta on Saturday at the pool. He was seen dancing on stage with both DJs during the wild party.
Check out more photos of Michael's party in the above slide: