WATCH: JOE JONAS Schools JIMMY FALLON On How To Be An Underwear Model!

Music wasn't the only thing that changed for former Jonas Brothers' main vocalist Joe Jonas when he returned to the scene. His amazing comeback with new funk pop band DNCE also came with a chiseled body and rock-hard abs.


?@guess ?

A photo posted by J O E J O N A S (@joejonas) on


? @guess ?

A photo posted by J O E J O N A S (@joejonas) on

The 27-year old singer posed in just underwear for GUESS' latest campaign. The Tonight Show host Jimmy Fallon could only say "oh, boy" upon seeing photos from the sultry shoot.

LOOK: Is JOE JONAS Dating Game Of Thrones Star SOPHIE TURNER?

"Can you show me how it's done?" Jimmy asked Joe while holding a pair of boxers from the collection. Watch how the two posed for the camera while wearing the pair over their pants below:

Video Courtesy: The Tonight Show Starring Jimmy Fallon

What do you think of Joe's campaign photos for GUESS? Tell us in the comments!