The lights came up on a stunningly beautiful Ariana Grande wearing one of the classiest sheer black-lace gowns we've ever seen, and suddenly we were serenaded by acoustic jazz versions of her songs "Problems" and "Break Free."
Showing off the power of her vocal range while still managing to look classically gorgeous, Ariana, 21, seemed to be on a mission to prove that she's an adult, and can look good in styles other than mini-skirts and pony-tails.
After the slow, melodic accompaniment of the piano and saxophone, the medley transitioned into "Love Me Harder" and the acoustic performance dropped away in favor of a more modern spectacle for her duet with The Weeknd. (It still rocked!)
The performance solidifies Grande's super-star status, proving that she has the raw talent to hang with classic songstresses and lounge singers of yesteryear - plus the flair to dominate the pop landscape she's excelled with this past year.