Watch Ariana Grande effortlessly perform a hilarious surprise song about being very, very tiny on late night: 'I am a human ...

Ariana Grande, who is no stranger to improv musical challenges, flexed her singing chops once again on Wednesday's episode of ...

Ariana DeBose knows more than anyone what a difference a decade makes.

The Oscar-nominated singer/actress also talked about "Wicked" and her intense training to play Glinda on Wednesday's (Feb. 5) show.