Mariah Carey Your Turn Blac Chyna ... for a Lap Dance

6/26/2016 6:49 AM PDT

Mariah Carey: Your Turn Blac Chyna ... for a Lap Dance (VIDEO)

My how things have changed ... Blac Chyna's now on the receiving end of a lap dance, with an assist from Mariah Carey.

Chyna showed up at Mariah's concert Saturday night in Vegas, and Mimi pulled her on stage for what has become a tradition during the show.

It's fun video, and check out Mariah's legs.  Pretty awesome.