Miley Cyrus has been caught on camera dancing topless, smearing herself with cake and riding on a penis-shaped bucking bronco during her birthday celebrations in Los Angeles over the weekend (22-23Nov14).

The Wrecking Ball singer turned 22 on Saturday (22Nov14) and she marked the occasion by throwing a party for her friends at the city's Factory Nightclub.

She was photographed arriving at the bash with her rumoured boyfriend Patrick Schwarzenegger, and now pictures and video taken during the event have emerged online and detail the wild antics inside.

Cyrus posted a number of pictures on her page showing her huge birthday cake which was shaped like a pepperoni pizza, while she also shared a shot of herself and a pal riding a big pink bucking bronco shaped like a penis.

Other pictures which have been published on social media show Cyrus and her pals, including Flaming Lips star Wayne Coyne, getting smeared with cake, and the singer is also seen standing barefoot in the middle of the pizza-shaped treat.

A video which has emerged on the Internet also shows Cyrus going topless in the middle of the party, baring her breasts and pinching her nipples for the camera.