Nick Jonas flaunts abs and more in magazine

Who knew Nick Jonas had those kind of abs? Apparently he's been working out a lot now that the Jonas Brothers are no more.

The 22-year-old singer appears shirtless in the new issue of Flaunt magazine, showing off his body in a series of shots reminiscent of those memorable Mark Wahlberg Calvin Klein underwear ads.

We imagine Jonas' girlfriend, 2012's Miss Universe Olivia Culpo, is pretty happy. Plus, the magazine spread is sure to drum up buzz for Jonas' new solo album, due out this fall.

Jonas also recently made an appearance on CBS' "Hawaii Five-0" and will next be seen in the movie "Careful What You Wish For" with Paul Sorvino and Dermot Mulroney. He's also starring in DirecTV's 10-episode drama series "Kingdom."

The Jonas Brothers split up last year supposedly over creative differences.

Go here to see more of the photos.