06/21/2010 07:40 am ET | Updated May 25, 2011

Miley Cyrus At MMVA's - With Justin Bieber (VIDEO)

Miley Cyrus proved she does sing live with her rendition of 'Party in the USA' at Canada's MuchMusic Video Awards Sunday night.

With a bandanna around her head Bret Michaels-style and a skimpy black outfit, Cyrus performed an occasionally off-key version of the song.

Tween bonus - Justin Bieber rode his bicycle out halfway through the song. WATCH: