Is that a copy of Photoshop under your towel Justin Bieber, or are you just pleased to see us?

We're guessing that Biebs must have been stung by recent speculation over whether his Calvin Klein advert was digitally enhanced in the downstairs department.

Because the pop heart throb has now taken to Instagram to share an intimate snap of himself in the bathroom, wearing just a towel around his waist.

He captioned it simply: "Photoshop lol".

Bieber's Calvin Klein campaign images were claimed by many to have been manipulated to enhance his muscles and - more hurtfully - his man bits.

His lawyers even issued a cease-and-desist notice to a website which claimed to be showing un-retouched images.

And Access Hollywood quoted his personal trainer as having waded in to the debate and said: "I can definitely confirm that he is a well-endowed guy… I sound weird saying that, but yes."

We'll let you make up your minds for yourselves, but we just have one question: Who took the picture then?