Cher Lloyd "upset" over 'Swagger Jagger' leak

Cher Lloyd has expressed her upset over the leak of her debut single 'Swagger Jagger'.

The 17-year-old X Factor finalist was expected to premiere the single in the coming weeks after filming the video for the track last month, but the song unexpectedly leaked online earlier this morning.

> Cher Lloyd's 'Swagger Jagger': First listen

"I've never been this upset ever!" Lloyd tweeted following the leak. "I worked so hard, and people wanna ruin it for me, if you wanted to hurt me you've done a great job (sic).

"please dont do this to me. i wish i was at home with my family, i've been through enough this year. me and my brats are stronger than this!! come onnnn! lets get em !!!!"

The 'Swagger Jagger' video encountered issues last month after a fire broke out on set.

Lloyd recently described her upcoming collaboration with Busta Rhymes as an "anthem for my generation".

Speaking to Digital Spy, the album's executive producer Savan Kotecha revealed that the record was a mixture of different sounds.

Watch Cher Lloyd's first X Factor audition below: