The Sisterhood of the Traveling Pants 2 is a 2008 sequel to the 2005 film The Sisterhood of the Traveling Pants. The original cast (Alexis Bledel, America Ferrera,  Blake Lively, and Amber Tamblyn) return to star in the movie, which was directed by Sanaa Hamri. The film is based upon the fourth novel in The Sisterhood of the Traveling Pants series, Forever in Blue: The Fourth Summer of the Sisterhood, but incorporates scenes and storylines from The Second Summer of the Sisterhood and Girls in Pants: The Third Summer of the Sisterhood. The film was released in the United States on August 6, 2008.