Spears, Carey, Rihanna to compete for MTV award

Britney Spears will fight it out with Rihanna and Mariah Carey at this year's MTV Video Music Awards (VMAs), after they were nominated for Best Female Video.

Spears' 'Piece of Me' promo is named alongside Carey's 'Touch My Body', Rihanna's 'Take A Bow', Katy Perry's 'I Kissed A Girl', and Jordin Sparks' 'No Air' duet with Chris Brown.