Britney Spears, 28, has been showing off a fit, toned body on holiday in Hawaii with her boyfriend and former manager, Jason Trawick, 44.

The pop princess looked gorgeous as she showed off her brand new slender beach body, strolling along in a revealing yellow string bikini. With her bronzed tan and toned figure, it appears as though the star has been working super hard on her new look.

It is thought that Britney may have been motivated to get back in shape in preparation for her recent guest role in the hit TV show Glee.