The 'Burn' singer's track was written especially for the hotly anticipated Fifty Shades, which is based on the erotic novel by E.L. James.
Elliie's song was produced by hit maker Max Martin, who worked on Katy Perry's Teenage Dream and Taylor Swift's 1989.
It's available to hear now on VEVO and pre-order on iTunes ... and we are LOVING it!
Ellie's previous album, Halycon Days, was a smash worldwide. She's sold more than six million albums and twenty million singles.
The song debuted as Ellie enjoys a beach holiday in Miami with McBusted boyfriend Dougie Poynter. The happy couple were snapped earlier this week enjoying some sea and sand, with Ellie looking AMAZING in a bandeau bikini.
They jetted off to Florida shortly after Ellie's 30th birthday.
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