Ozil played as Germany defeated Argentina in the final in Brazil and has been living the high life ever since, with his latest exploits captured on Instagram by Aoki.
Once he returns to Arsenal, Ozil will hope to improve on last season's performances, as he faced criticism after a severe dip in form during the second half of the campaign.
Best friends | Ozil poses for a photo with Aoki
Jump for joy | Ozil will return to Arsenal a World Cup winner
Cake fight! | Ozil and Aoki prank the raucous crowd in Las Vegas