Nick Jonas is definitely one hot sexy male celebrity. This 17-year-old American cutie is a singer-songwriter, musician, and actor. He is best known as one of the Jonas Brothers, a pop-rock band he formed with his brothers Joe and Kevin.

After meeting with the three brothers and hearing the song, "Please Be Mine", written and performed by the trio, Daylight/Columbia Records decided to sign them as a group act. They considered naming their group "Sons of Jonas" before settling on the name "Jonas Brothers." To date, Jonas Brothers have already released three studio albums. They also starred in two Disney Channel Original Movies, Camp Rock and Camp Rock 2: The Final Jam.

The hot and sexy singer-actor is also a diabetes ambassador. He was diagnosed with Type I diabetes at the age of 13 and wears an OmniPod insulin pump to help him manage his condition. He has developed the Change for the Children Foundation. Partnering with five different charities, their goal is to raise money and awareness for diabetes.