Christina's single leaks online

A demo version of Christina Aguilera's comeback single, 'Your Body', has leaked online. Christina Aguilera's comeback single has leaked online.

New song, 'Your Body', surfaced on the internet last night (23.08.12), but is believed to be a demo and slower than the final version of the song.

The track is an mid-tempo RB dance song which sees Christina sing "All I wanna do is fk your body" in the chorus.

The star has also previewed new purple hair on twitter and posted a number of photos from the set of the video for 'Your Body'.

She said ealrier this week: "Its finally here- MUSIC VIDEO shoot day!!!!!!!!! Get ready guys!!!!!!!!!! (sic)"

The new track is a preview of Christina's seventh album, which will be released this autumn.

The as-yet-untitled record will follow up to 2010's 'Bionic', which was a commercial flop, although Christina's profile was recently boosted when she appeared on Maroon 5's huge 'Moves Like Jagger' single.

She is also a mentor on the US version of 'The Voice' and contributed a number of songs to the soundtrack to film 'Burlesque' - which she also starred in - which was a hit, selling over a million copies worldwide.