AceShowbiz -

Dianna Agron has landed a role in feature film project. The singer/actress who is known for her portrayal of Quinn Fabray in hit TV series "Glee" has been cast in "I Am Number Four", so said The Hollywood Reporter (THR). She nabs the female lead role and is going to star opposite Alex Pettyfer.

The film itself will center its story on a group of nine aliens who escaped their home planet just before it was annihilated by a rival species. Assimilating to high school on Earth, the fourth of the group who will be played by Pettyfer discovers that the enemy is now after him on Earth.

Agron's character is dating a high school jock but later falls for Number Four and becomes his confidante. According to THR, the role "was highly sought-after, and the studio went through several rounds of tests to find the right candidate."

Also aboard to star in the film are Sharlto Copley and Teresa Palmer. The "District 9" actor is tapped as Four's mentor while the "Bedtime Stories" beauty is hired to portray Four's fellow alien, Number Six.

"I Am Number Four", which will be Agron's big-studio debut, is directed by D.J. Caruso. Veterean filmmakers Michael Bay and Steven Spielberg team up to produce the action sci-fi which eyes February 18, 2011 U.S. release.