Nick Jonas is getting cool for summer ... was a selfie of a camo shirt-wearing Jonas staring into a mirror with his curly ...

Her curly brown hair is pulled back with green ... Before you go, check out Priyanka Chopra Jonas and Nick Jonas' cutest moments with Malti.

It's common knowledge that Kevin Jonas has three brothers in Joe Jonas, Nick Jonas, and Frankie Jonas ... and the beauty clearly inherited her dad's curly locks, too. But that wasn't the only ...