Justin Bieber fans reacted with glee Tuesday after the pop star posted a nude photo of himself on his Instagram account.

“Loook,” Bieber said in a one-word post on Twitter with a link to the picture.

The image shows Bieber, 21, standing nude with his back to the camera, derrière exposed, as he stands on a boat pointing out at a small island in the distance.

Posted shortly before midnight Monday, the picture had 1.6 million ‘likes’ by noon on Tuesday.

According to celebrity website TMZ, the photo was taken while Bieber was on a trip to Bora Bora.

Bieber has been on a trip through the region recently, attending a church conference in Australia.

It’s not clear who took the picture or exactly when it was taken.

Bieber fans reacted to the image with a flood of posts, some excited, others dismayed.