Miley Cyrus is twerking back to the MTV Video Music Awards as the show's host.

The 25-year-old singer revealed on her social media accounts that she is helming the August 30 ceremony.

Cyrus announced the gig by posting a photo of herself in an alien costume with sandwich boards that read "MTV won't let me perform" and "so I'm hosting this year's VMAs".

A scantily clad Cyrus shocked audiences with a rump-shaking performance alongside Robin Thicke at the 2013 MTV Video Music Awards.

Cyrus won the video of the year trophy at last year's show and invited a young homeless man named Jesse Helt on stage to accept the trophy on her behalf.

The 2015 MTV Video Music Awards will air live on MTV from the Microsoft Theatre in Los Angeles.