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Miley Cyrus duets with Madonna for "MTV Unplugged" special

Madonna and Miley Cyrus perform onstage during "Miley Cyrus: MTV Unplugged" at Sunset Gower Studios on Jan. 28, 2014, in Hollywood, Calif.
Christopher Polk/Getty Images for MTV

Miley Cyrus is joining forces with Madonna for MTV.

The 21-year-old pop star and the 55-year-old Queen of Pop grinded and grabbed each other as they performed Cyrus' hit "We Can't Stop" and Madonna's 2000 track "Don't Tell Me" on Tuesday during a taping in Hollywood. The "MTV Unplugged" special that closes with the duet is set to air Wednesday.

Cyrus is the star of the show. She performs a selection of songs from her latest album, "Bangerz," including "Wrecking Ball," her new single, "Adore You," and the live debut of "Drive." Though her whittled stomach and occasional crotch-grabs compete for attention, Cyrus' voice takes center stage in the hourlong acoustic show.

The "Unplugged" concert airs Wednesday at 9 p.m. ET on MTV.