Miranda Cosgrove appeared on 'Late Night With Jimmy Fallon' last night, but she didn't get off easy with just a simple interview. Fallon challenged the actress/popstar to an 'iCarly' trivia contest against two "'iCarly' superfans," who also happen to be writers for Fallon's show.

Fallon played host, and asked the 17-year-old teen idol questions about the Nickelodeon kids' show, which she stars on. The kicker? Cosgrove was stumped on the question about two yearbook categories that her television best friend, Sam (who happens to be up-and-coming country singer Jennette McCurdy) won, and she lost the game.

Cosgrove dropped her sophomore EP, 'High Maintenance,' back in March, which spawned the fun, 'let your hair down' Avril-penned pop tune, 'Dancing Crazy.' Although the young singer was recently accepted into both NYU and USC, she may decide to put college on hold for awhile to continue production on 'iCarly' -- which is great because that will give her plenty of time to brush up on her show trivia!

Watch Miranda Cosgrove on 'Late Night With Jimmy Fallon'

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