Justin Bieber Gets Shirtless at the Pool Before Supporting Floyd Mayweather!

Justin Bieber points his finger at the camera while enjoying the sun shirtless at the Hard Rock Hotel & Casino on Saturday afternoon (September 13) in Las Vegas.

The 20-year-old singer hit up the pool before heading to the Floyd Mayweather vs. Marcos Maidana boxing match later that same night.

PHOTOS: Check out the latest pics of Justin Bieber

In case you missed it, check out the report that Justin flew out with on-again girlfriend Selena Gomez to introduce her to his friend Floyd before the fight.