Jonas Brothers star Joe Jonas is having a week to remember - after turning 19 at the weekend, he has scored his first number one album and graduated from high school.

Jonas received his diploma during a show in Georgia on Wednesday night - on the same day the trio's A Little Bit Longer hit the top of the U.S. charts.

The teenager donned a cap and gown onstage as fans cheered his achievement.

Jonas earned his diploma from his road studies. He and younger brother Nick are home schooled.