updated 09/03/2012 AT 10:00 AM ET
•originally published 09/03/2012 AT 5:15 PM ET
After a storied career in which he won 18 Olympic gold medals, and 22 medals overall, Michael Phelps celebrated his retirement from competitive swimming this weekend at – what else? – a pool party.
Phelps, 27, who became a legend in Athens, Beijing and London, chose Las Vegas as the city for his send-off, enjoying a raucous Saturday afternoon at the Encore Beach Club with friends, fans and fellow swimmers – including his training partner and close friend Allison Schmitt.
The Maryland native was grinning ear to ear as the club’s bikini-clad servers gave him a special cake paying tribute to his 22 medals, the most won by any Olympian in history.