Britney Spears is set to sing a duet with the late Marilyn Monroe. The troubled star plans to boost her ailing career by performing with the movie icon - who died more than four decades ago - on a previously unreleased Marilyn song called 'Down Boy'. Lance Bass, 28, a former member of Britney's ex-lover Justin Timberlake's band *NSYNC, has reportedly secured the rights to the song and thinks it would be perfect for Britney. A source told Britain's Daily Star newspaper: "Lance wants Britney to sing with Marilyn on the track, like Natalie Cole did on 'Unforgettable' with her dad Nat King Cole." Plans are already in place for the 'Toxic' singer to don a platinum Marilyn-esque wig and dress like the glamour icon, when they shoot the video. Screen and music goddess Marilyn died of an overdose aged 36 in 1962. Despite being one of the most successful women of her generation, the star was believed to have battled numerous personal demons. Mother-of-two Britney, 25, recently spent a month in rehab following a bout of excessive partying and worrying behaviour, which included shaving off her hair.

The singer is currently working on a new album planned for release in October and has been furiously exercising to regain her famously toned figure.

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