Spotted: Joe Jonas Hits The Hill For Juvenile Diabetes

Every day, stars wander the halls of MTV News to talk about their latest projects and goof around with staff members. But sometimes we catch stars elsewhere, and that's why we put together Spotted!, a daily compendium of celebs in the wild.

The Jonas Brothers aren't just about catchy songs, teenage hearts and wacky sitcoms. They're also steeped in activism: Joe Jonas ran in a charity race for the Special Olympics, and yesterday Nick went to the National Press Club luncheon in Washington, D.C., to discuss his struggle with juvenile diabetes. Nick was diagnosed with Type I diabetes when he was 13 and has to keep close tabs on his insulin levels. He has established the Change for Children program and helped out with a PSA for the Children's National Medical Center. At the luncheon, Nick encouraged the press to delve deeply into the problems surrounding juvenile diabetes. "I'm lucky to have a great support system in my family as well as the tools I need to manage my diabetes properly," he said. "By speaking publicly about my experience I hope to increase diabetes awareness, encourage diabetes education and help fundraising for research and other programs for kids with diabetes. The more you report about diabetes, the more people will know."

Nick Jonas was certainly the most altruistic of celebrities out in public yesterday, but that didn't stop them from attracting some camera flashes. Lady Gaga landed at the airport in Los Angeles, Britney Spears visited the M&M Store in Times Square and Rihanna explored lower Manhattan. Click here for these photos, as well as the entire "Spotted!" archive, including candid shots of Beyoncé, Hilary Duff, Gwen Stefani, Madonna and Justin Timberlake!