Newest Edition to the Sisterhood

The new film Sisterhood of the traveling pants 2, is from the book created by Anne Brashares. According to IMDB.com, 'The Sisterhood of the Traveling Pants 2 is based on the last novel with flashbacks to the first three.' Which means that you might be a little lost if you haven't read the entire series. It will most likely be the last movie with the series, since they have filmed in context of the Last book. David Henrie, the actor on Wizards of Waverly Place's Girlfriend, Lucy Hale will be playing Lena's sister, Effie. The Character wasn't introduced in the First movie, which is really weird, since they went up to the second book in the first film.
Will you go see the newest edition to the Sisterhood?
Do you do a 'sisterhood' thing with your friends?