Adam Levine has stripped off for a new Instagram photo.

The Maroon 5 singer, who has legions of adoring fans across the world, was snapped wearing nothing but a small pair of underwear by his fiancée Behati Prinsloo.

The photo's caption reads: "70's porn called. It wants it's vibe back. Immediately."

The image was lapped up by fans, with one Instagram user commenting: "I got pregnant looking at this photo. I want child support."

Speaking previoulsy meanwhile about Levine's recent propsal, Prinsloo said:

"It was a one-knee thing! It was serious, it was very old school."