A real bonus for Jonas fans! Joe and brother Nick take off their shirts in Hawaii

By Daily Mail ReporterToned: Joe Jonas showed off an impressive physique on the beach in Hawaii yesterday In just pairs of blacHe was recently spotted in the midst of a strenuous workout with his trainer. And it appears that Joe Jonas' hard work has paid off, as 21-year-old showed off an impressive physique in Hawaii, yesterday. The singer and his18-year-old brother Nick went shirtless as they