you can find me in the club ...
Tristan Thompson is living the single life, partying it up in Vegas ... with at least one lovely lady hanging off his arm.
The NBA star was seen hanging out at the Marquee Nightclub in Sin City early Sunday morning (around 1:30 AM), where we're told he was with a posse of 3 ... one dude, who seemed to be his wingman for the night, and a couple of girls. One for each guy.
Eyewitnesses tell us the group were definitely together the whole time and seemed to be having a good time -- dancing with each other and chatting up with drinks in tow.