Ariana Grande & Jimmy Fallon Are Hilarious Teens

Many celebrities have appeared, with amazing results, in Jimmy Fallon's The Tonight Show segments — but this is without a doubt one of the best. In a new edition of Jimmy Fallon's long-running "Ew!" segment, Ariana Grande appeared alongside Fallon's hilariously convincing teenage girl character, Sara. But while Grande is hardly the first celebrity to appear in the skit, her appearance is a must-see — mostly because she manages to pull off the whole teenage girl mind-set in an insanely convincing fashion.

In the segment on Friday night, Grande sang, took selfies, and looked hilariously vacant. And her outfit was perfect, from the sparkly eye shadow to the novelty unicorn purse. To be fair, she was probably good at playing a Nickelodeon star because she was recently just that — remember Victorious?

For those of you who have never seen the "Ew!" segments, it's always campy (admittedly, Fallon's voice in his performance as Sara can get on my nerves occasionally) and there are often a few bad jokes: In this edition, Ariana Grande says that she prefers "grande" lattes to venti, for example.

Still, though, it's always hilarious — there have been a few great performances in the past (remember Taylor Swift in braces?), as well as some duds (Lindsay Lohan, don't you remember that you started off as an actress?). Grande may be the one celebrity to give the most convincing performance as an annoying teenage girl, but let's see how she stacks up amongst the other guests who have previously appeared in the segment.

8. Lindsay Lohan

Her manic energy just made me nervous.

7. Channing Tatum

Not totally convinced, Tatum — though the smile-off was great.

6. Michael Strahan

Strahan was very excited about having hair, but not entirely convincing.

5. will.i.am

Props for the musical number and the headgear.

4. Taylor Swift

She was such a convincing nerd. Love the rambling.

3. Will Ferrell

He fully commits — plus Michelle Obama shows up!

2. Ariana Grande

Very convincing, especially the vacant stare.

1. Seth Rogen/Zac Efron

More chest hair under sundresses. Efron did an especially impressive job with all the hair flipping. He clearly also loved having hair.

Image: The Tonight Show Starring Jimmy Fallon/YouTube