Britney's bikini of the day parades another swimsuit ...but looks a little glum poolside

Britney Spears just can't help showing off her figure - and extensive wardrobe. Revealing her third bikini in as many days, the pop star flaunted her toned abs again for another dip in the pool with her sons. The singer played doting mother to Sean Preston, three, and Jayden James, two, showing off the enviable body she recently acquired through intense training for her current tour.

Britney sports a mauve bikini for day three of her swimsuit extravaganza at the Ritz Carlton in Los Angeles

Britney opted for a mauve polka-dotted two-piece for day three of her LA holiday - displaying her rainbow selection of swimwear as she played with the boys at the Ritz Carlton hotel yesterday.

'I have had to work hard at getting my body back to where it used to be,' she told Glamour earlier this year. 'I used to be obsessed with working out ... But I can't get motivated right now because I'm so focused on my music.'

The pop star showed off her toned abs after undergoing gruelling training for her current Circus tour

The singer cut a glum figure despite a well-earned one-month break

Saturday saw the pretty in pink blonde sporting a fuchsia bikini - and on Sunday, Britney slipped into an aquamarine number. Clearly, the star is sticking to the unwritten Hollywood code of wearing a different swimsuit for every day.

Fortunately though, Britney sensibly chose not to impose the same rule on the boys, who remained in the same trunks. The 27-year-old singer is currently enjoying a well-earned month off after her gruelling 'The Circus... Starring Britney Spears' world tour.

Britney spent the day playing with sons Sean, left, and Jayden

Two-year old Jayden only has eyes for his mother

She is set to resume her concert in Hamilton, Canada on August 20, before finally wrapping the tour in Australia in November. Despite the relaxing holiday, Britney cut a glum figure by the pool. Perhaps she was missing her notably absent boyfriend Jason Trawick.

Engagement rumours have surrounded the low-key couple in recent weeks after Britney was spotted wearing a diamond ring on her engagement finger. She was wearing the ring all weekend - but took it off when she spent time in the pool.

Britney opted for an aquamarine number on Sunday, left, and a fuchsia bikini on Saturday