Britney Spears almost loses her bikini top

Britney Spears gets a little over amorous as she puts on a very public display of affection with boyfriend Jason Trawick. The couple, who are on a break in Hawaii together, were pictured frolicking in the sea together, sharing tender hugs and kisses. But at one point the singer looked in danger of losing her bikini top, which appeared to have come undone as she wrapped her legs around her other half.

Oops! Britney Spears's bikini appears to have come undone as she frolics in the sea with boyfriend Jason Trawick in Hawaii today

The couple looked very much in love as they shared tender hugs and kisses in the ocean

In any case the green two piece looked slightly on the small side, with the 28-year-old pop star showing neathage (or under cleavage). After taking a dip, the love-struck duo shared a romantic stroll along the beach, walking hand in hand. Yesterday they enjoyed another beach trip, with Britney unveiling her toned beach body after managing to get her dancer's legs back in just two weeks.

Britney and Jason looked in great shape, but the singer's bikini top looked slightly on the small side with her showing 'under cleavage'

Her boyfriend Jason, 44, was also looking in good shape, and showed off his washboard stomach in a pair of boarding short. He cut a very different image to that of Britney's ex and father of her two children, former dancer Kevin Federline, who was pictured looking bigger than ever in Miami yesterday. Britney, however, has managed to turn things around lately and got back in shape - probably spurred on by the recent gust slot she filmed in hit TV show Glee.

Britney wore a green two piece on day two of her romantic getaway

Security was bumped up on the LA set when she went to film her part to avoid details being leaked. 'It was literally like the President had come,’ series’ creator Ryan Murphy told E!Online of the pop star's visit. 'We all had to wear wristbands. I couldn't get into my own sets at one point, which I thought was hilarious.

Seen here in a yellow bikini, showing off her newly svelte figure

Everybody was sort of trying to get into the set and find out what the hell she's doing in the episode.’ The pop princess is said to be making her appearance in episode two of the second series of Glee, in an instalment entitled Britney/Brittany. She reportedly appears in the ether-induced fever dreams of the Glee club members after they visit the local dentist. At least six Britney songs are understood to feature in the hotly-anticipated episode.

The singer squeezed into a skimpy yellow string bikini,

showing off her trim and bronzed figure to perfection

The star has also been hard at work recording new material, recording her follow-up to her 2008 album Circus. That had a fraught gestation, as it followed her very public breakdown in February 2007 when she shaved her head, as well as her spell on a mental health ward in January 2008. And after a police raid, she her lost custody of her children, Sean Preston, four, and Jayden James, three. Since then, Britney has found stability with boyfriend Jason despite ditching him as her manager after completing fifth highest grossing tour of 2009 with Circus show.