We won't see Nick Jonas [1] on stage with BFF Demi Lovato [2] for another few weeks, but he's definitely keeping himself busy until then. On Tuesday, the singer stopped by to see the patients at the Children's Hospital of Orange County, where he signed autographs, posed for photos, and even gave an interview. The visit ties into Nick's role as an ambassador for the Ryan Seacrest Foundation, which a somehow-sexy Sesame Street video [3] and a new Carpool Karaoke session with Demi Lovato [4] and James Corden. Keep reading to get your fill of Nick before his tour with Demi [5] kicks off.