Who The Heck is Ariana Grande?!

Ariana Grande. You see her trending on Twitter pretty constantly - but if you're under 30, chances are, you have no idea who she is, right? Well, I'm here to tell you, she stars on the Nickelodeon show 'Victorious' and apparently has a gazillion followers on Twitter. And since I've been writing entertainment news, I've definitely learned enough about her...probably more than enough. Long story short: Ariana Grande's hot stuff, and getting hotter by the minute.

Today, Ariana Grande was set to debut a brand spanking new original song during an appearance in Illinois, so naturally Twitter lit up with mentions of "Good Luck!"

Say what you want, but these teen stars sure have some supportive fans.