If there's one child pop star who's fully completed the transformation from boy to one of the hottest men on the planet, it's Nick Jonas.

Sure, we couldn't get enough of his bright eyes, bouncy curls and innocent, boyish charm in The Jonas Brothers. However, after he tossed the purity ring, hit the gym and buzzed his locks, the NickJo hot factor skyrocketed.

Whether sparring in the gym or suited up for the red carpet, the Last Year Was Complicated crooner knows how to be sexy — with or without his shirt on. While that's a challenge for some guys, Nick does it effortlessly. And the talented singer-actor isn't afraid to show off his looks on Instagram.

We've gathered some of our favorite NickJo IGs, which you can get real "Close" to above.

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