See, My ABs Are Real -- Justin Bieber Mocks Photoshop Rumors

Bieber posted an Instagram pic of himself in just a towel, showing off his abs (and maybe a hint of bulge?), with the caption "Photoshop lol."

The response comes days after BreatheHeavy.com claimed to have received unedited photos from the shoot, which showed Bieber with a larger head, smaller biceps, and a "reduced bulge."

Photoshop lol

Een foto die is geplaatst door Justin Bieber (@justinbieber) op Jan 14, 2015 at 12:01 PST

Last week, Mark Wahlberg's wife also made a Photoshop crack when comparing the singer’s photos to her husband's '90s campaign for the designer.

"Wow the retouching," snarked Rhea Wahlberg on Twitter.

My baby was the 1st and the best😉😉😍😍 And not to mention......wow the retouching......

— Rhea W. (@rheadur) January 7, 2015