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Britney Spears' new sexy look has suddenly made her irresistable to countless men, including ex-husband Kevin Federline.

According to Star magazine, the couple have rekindled their “once red-hot sex life” with various trysts around town.

PHOTOS: Click here for photos of Britney through the years.

From hotel suites, to dressing rooms to backstage on Britney’s ‘Circus’ tour, the former couple has been hooking up whenever they feel the urge.

PHOTOS: Click here for the ABC's of Britney.

“It’s like they’re newlyweds all over again,” a family insider told Star. “Brit and Kevin can’t keep their hands off each other! The flings have made them both a lot happier.”

PHOTOS: Click here for Britney's most memorable performances.

That may be so for them, but Federline’s girlfriend, ex-volleyball star Victoria Prince, is hardly thrilled. According to Star’s report, Prince busted Britney and Kevin in the act.

Ouch.

LINK: Click here for the full report from Star Magazine.