Lady GaGa, Justin Bieber and Taylor Swift are leading the way with nominations at MTV's second annual O Music Awards.
The stars will all compete for the digital ceremony's Fan Army prize alongside acts including Iron Maiden, Demi Lovato and Lil Wayne, while Gaga is named in the Must Follow Artist On Twitter category - a prize she won at the inaugural event in April (11).
Katy Perry and Joe Jonas are nominated for the Best Lyrics Video award for E.T. and See No More respectively, while Gwyneth Paltrow and Britney Spears will both compete for the Most Outrageous Tweet prize.
Lovato and Bieber will face off in the category for Best Artist With A Cameraphone.
The awards will be handed out on 31 October (11).