Dianna Agron (Glee) has landed her first feature and it's kind of a big one.  While many had been vying for the female romantic lead in director D.J. Caruso's I Am Number Four, Agron has landed the gig.  She'll be starring alongside Teresa Palmer, Alex Pettyfer and Sharlto Copley in the sci-fi adventure film that starts filming next month in Pittsburgh.

Set to get released on February 18, 2011, I Am Number Four is an adaptation of the upcoming young-adult science fiction book by Jobie Hughes and James Frey.  The film is being produced by Michael Bay and Steven Spielberg and it was written by Al Gough and Miles Millar (Smallville).

The film is about nine earthbound aliens who escaped their planet just before it was annihilated by a rival species.  Hiding out on Earth, disguised as human teenagers in high school, the title character discovers that he is being hunted by the enemy that destroyed his planet.  Pettyfer plays the lead (Number Four), Copley will play Pettyfer's guardian and mentor, Palmer (Number Six), and Agron will play a girl dating a high school jock who falls for Number Four and becomes his confidante.  [via THR]