Miley Cyrus at the 2010 Much Music Video Awards

Miley Cyrus strikes a pose backstage at the 2010 MuchMusic Video Awards in Toronto, Canada.

Miley was joined by Justin Bieber for a rendition of “Party in the U.S.A.” The Disney teen pop-star wore a black mesh leotard and leather hotpants as she bumped and grinded with “clad” dancers.