3. Nick Jonas

Nicholas Jerry ‘Nick’ Jonas is a singer-songwriter, musician and actor. He is best known as one of the Jonas Brothers, a pop-rock band Jonas formed with his brothers Joe and Kevin. With wealth of $12.5 million, this 19 year old lad is the third richest teen on this list.

At the age of 13, Jonas was diagnosed with Type-I diabetes. He always wears an OmniPod insulin pump, which helps him manage his condition. This is why he developed ‘Change for the Children Foundation,’ whose primary aim is to raise money and awareness towards diabetes.