R. Kelly sings "Bump 'N Grind" for a fan

R. Kelly sings “Bump N’ Grind” for a fan inside of an 24 Hour Fitness sauna in Las Vegas

*R. Kelly went in for a sauna at 24 Hour Fitness last weekend…and ended up on TMZ after he found himself singing the opening lines of his hit single, “Bump N’ Grind” for a fan.

According to the website, Kels walked into the sauna at a 24 Hour Fitness in Las Vegas when a fan asked him, “Are you R. Kelly?”

Kelly, dressed in a t-shirt and long pants for some reason, first denied it was him, but, said he could sing like R. Kelly.

The fan then filmed a selfie with the singer as he broke into song.

Watch below:

And great acoustics to boot.