Ariana performs Problem at the RDMAs.

Ariana Grande wears a pair of mouse ears while performing at the 2014 Radio Disney Music Awards held at the Nokia Theatre L.A. Live in Los Angeles on Saturday night (April 26).

The 20-year-old singer is debuting her new single “Problem” at the show and it will hit iTunes right after the program airs tomorrow night at 8PM ET/PT on Disney Channel!