Ariana Grande

Ariana Grande is Alexa Armstrong on 'Ew!' (VIDEO)

Ariana Grande was on "Ew!" with Sara on The Tonight Show starring Jimmy Fallon on Friday as Alexa Armstrong.

This was so funny!

Ariana is so cute here. She's so good!!! Woohoo! Oh my goodness.


Jimmy shows a clip from the Teen Nick show "Ew!" in which Sara and her friend Alexa have a sing-off.

The Tonight Show Starring Jimmy Fallon features hilarious highlights from the show including: comedy sketches, music parodies, celebrity interviews, ridiculous games, and, of course, Jimmy's Thank You Notes and hashtags!

Ariana Grande is Alexa Armstrong on 'Ew!' (VIDEO)