Justin Bieber Bares His Whole Butt While Vacationing In Bora Bora!

He sure knows how to vacation right!
Justin Bieber has been in Bora Bora celebrating the 4th of July this past week, but he really let us have it on Monday!
That’s because the 21-year-old shared a rather cheeky photo to his Instagram of himself standing on a boat spotting land ahead.
[ Photo: Who Wore It Best — Justin, Kris, Or Kylie? ]
Oh yeah — and he’s completely naked!
Biebs didn’t wanna give too much of his goods away, but he made sure to show off his bare behind.
Ch-ch-check out Justin’s full moon (below)!!!

Your thoughts??
[Image via Justin Bieber/Instagram.]