The extravaganza, courtesy of Ciroc and Mobli, was held on a Miami yacht full of family and friends sailing across the inky ocean waves of South Beach.
You don't have to ask - you already know the event was definitely star-studded!
The party, which is the second bday celebration for Simmons, marks her 25th birthday and the 23rd for Ibaka.
Though some speculation is bound to occur, the two are just friends and thought it would be fun to party together on their special day! They were right - check them out in our GlobalGrind gallery.