Sisterhood of the Traveling Pants 2 is the upcoming sequel to the 2005 film The Sisterhood of the Traveling Pants. Directed by Sanaa Hamri, the original cast (America Ferrera, Amber Tamblyn, Alexis Bledel and Blake Lively) will star in the sequel, and the film is based around the fourth novel in The Sisterhood of the Traveling Pants series, Forever in Blue: The Fourth Summer of the Sisterhood. The film is rated PG-13.Three years after the events of THE SISTERHOOD OF THE TRAVELING PANTS, the four young women are back. Despite the distance that divides them as they depart for college, the friends from Ann Brashares's teen book series still stay connected. This sequel returns Amber Tamblyn, America Ferrera, Blake Lively, and Alexis Bledel to the roles they originated..