Ariana Grande may have gotten her start on Nickelodeon, but she just proved that she's also a Disney Channel fan by singing a ...

Ariana Grande did an impromptu cover of Hilary Duff's song 'Why Not' on Instagram, and got the Disney icon's approval!

Ariana Grande recently performed a rendition of Hilary Duff’s 2003 single Why Not in a promotional clip for her brand, r.e.m.