Of course, he also has plenty of chemistry with 23-year-old McKinney. The two are already well acquainted -- the Baywatch star made out with Jonas for DNCE's sexy "Body Moves" music video.
The new campaign is art directed by Paul Marciano, Chief Creative Officer for Guess, and is shot by famed photographer Yu Tsai.
"It feels great to be chosen by Paul Marciano as the male global ambassador for the new Guess Underwear campaign with a focus on the Guess man," Jonas said in a statement. "I am excited to be part of this amazing experience and to be able to represent the brand’s image."
Jonas told ET in November that he definitely "upped" his workout regime while touring with DNCE with the help of a traveling personal trainer.Read more at Entertainment Tonight