Former child star Miley Cyrus is all grown up in Israeli DJ/producer Borgore's new party-themed video for Decisions, cavorting with porn stars, tongue-kissing a pantomime horse and getting caught up in a cake fight.

The Hannah Montana star, who features in the song's chorus, pops out of a huge party cake in the promo and hurls sponge and frosting at Borgore, who in turn smears cream over Cyrus.

The two appear to party with pals until the sun comes up over Hollywood, at which point the DJ cycles off into the Hills towing a tired Miley, wearing a cake-splattered ballgown and smeared make-up, on a cart behind him.

Directed by Christian Lamb, the video features Hollywood party planner Jeff Beacher and takes place at his Beacher’s Madhouse at the Roosevelt Hotel.