There's going to be a "Party in the U.S.A." -- or at least in Hollywood -- when Miley Cyrus lends her musical expertise to the remaining contestants on American Idol this week.
FOX confirms that the teen pop sensation will be the celebrity mentor during the Billboard No.1 hits-themed show on Tuesday (8 p.m. EST). Of the 11 contestants left, three are teens: Siobhan Magnus, 19, and Aaron Kelly, 16, and Katie Stevens, 17. Tim Urban is 20 years old.
But last week's theme -- contestants performed from The Rolling Stones' song book -- proved age is nothing but a number as Magnus, Kelly and Stevens all pleased the judges with their take on classic songs by the legendary rock band.