You probably still remember Miranda Cosgrove as "The Class Factotum" (otherwise known as a "Teacher's Pet") in the 2003 Jack Black film School of Rock. And while we enjoyed watching her show off her prissy side -- especially the part where her character refuses to play a "groupie" because, as she puts it, "They're sluts! They sleep with the band!" -- we're happy to see her make the smooth transition from child actor to, well, teenage actor... who also sings.

Five years later, 15-year-old Miranda (who somehow skipped over that whole "awkward adolescent" phase) proves she's still at the head of the class by nabbing the title role in the hit Nickelodeon series, iCarly. Check out her new video, "Leave It All To Me," which is also the iCarly theme song, and click here to see photos from her June 11th appearance on MTV's Spankin' New Music Week.

++Can't get enough Miranda? Pick up the newly released iCarly soundtrack, featuring more songs from Cosgrove, plus hits from fellow Nick alums (The Naked Brothers Band and Drake Bell) and artists like Sean Kingston, Avril Lavigne and Natasha Bedingfield.