Nick Jonas is revealing a sexier, more mature side to him by posting a shirtless selfie on Instagram. On Tuesday, he posted the picture and commented that it was out of character for him to post such a picture.

He captioned the photo "I never do this, but. . ."

The 20-year-old Jonas brother, the youngest out of the three, has been tweeting about his workout routine. He likely wanted to show off the results of his hard work.

Us Weekly reports his fans were overjoyed that he did share his buff physique, with one writing "Marry me and make babies!" and another writing "This totally made me feel better after my crappy day at work.”

He recently shared one of his healthy eating options with Us, saying "I love dried kale with seasoning on it.”

Earlier this month, Nick’s older brother Kevin and his wife, Danielle Jonas, revealed they are expecting their first child.

image: Instagram