Selena Gomez is NOT going to want to see these pix!

Justin Bieber in on vacation in Hawaii with a bevy of beauties, including new flame Sahara Ray, and what better way to kick back than with some skinny dipping in waterfalls! The Biebs and the Aussie bikini model stripped down to take the plunge, but JB hid his package behind a pink flamingo inner tube... or so he thought!

The New York Daily News managed to get photos of the Canadian crooner's full frontal and published them with a giant black bar hiding his goods. This isn't the first time the "Cold Water" crooner's pee pee has hit the papers, as he was photographed walking around naked on his deck in Bora Bora with former fling Jayde Pierce.

Is he trying to one-up Orlando Bloom and his manhood ? We think so!