AceShowbiz -

After given a green light, "Mean Girls 2" apparently has begun filling the cast line-up. Two actresses, Meaghan Jette Martin and Maiara Walsh, have publicly announced that they are cast in the film to play major characters.

Martin posted on her Facebook, "Here is that announcemet..... I won't be going on [the Camp Rock 2] tour because I will be in Atlanta filming 'Mean Girls 2'! I will be playing the lead role of 'Jo'!" Meanwhile, Walsh has previously written on her Twitter, "So it's official.. I will be playing the lead 'plastic' in Mean Girls 2! I'm off to Atlanta at the end of the month to shoot :)"

Martin's character Jo is the main mean girl like the one played by Rachel McAdams in "Mean Girls". As for Walsh's unnamed character, she will be one of Jo's followers, the Plastics. In the upcoming drama, Jo agrees to befriend outcast Abby at the urging of Abby's wealthy father in exchange for paying all of Jo's costs for the college of her dreams.

The story becomes a high stakes battle of loyalty that ultimately comes to a head when one of our heroines finds out that her friendship has been bought and paid for. Director Melanie Mayron will begin shooting for the movie in July, Paramount Famous Productions stated.

Meaghan Jette Martin plays Tess in "Camp Rock" and reprises the role in "Camp Rock 2: The Final Jam" which will be premiered September 3 on Disney Channel. Maiara Walsh, in the meantime, is known for portraying Ana Solis on "Desperate Housewives", after taking a lead role on Disney Channel sitcom "Cory in the House".