The musical comedy franchise has signed on another of its stars for the third installment The Barden Bellas will be able to add another alum to their ranks in the third Pitch Perfect movie! Anna Camp, who starred as Aubrey Posen, the group's leader, in the first film, and reprised her role in the second as the owner of a retreat, has signed on to reprise the role once again in the third installment of the musical comedy franchise.