Tibby (Amber Tamblyn), Lena (Alexis Bledel), Carmen (America Ferrera), and Bridget (Blake Lively) are lifelong friends from birth. They find a second-hand pair of jeans that magically fit them all. They are separating for the summer but vows to stay connected by sharing the magic pants. Lena has a Greek holiday with her Greek relatives. Bridget misses her dead mom and is away at soccer camp. Carmen is meeting up with her dad (Bradley Whitford) but he surprises her with a wedding to girlfriend (Nancy Travis). Tibby is stuck working the summer and finds Bailey (Jenna Boyd) passed out in the aisle.
The biggest fundamental problem for this movie is that the girls spend most of the movie apart. The point of these types of movies is for the group to develop chemistry together. This one assumes the chemistry and split the girls up. There is a reason why the best story is Tibby and Bailey. They are actually allowed to build up a relationship. Lena's story probably the weakest. It's way too light like a frivolous Greek holiday movie. The biggest asset in the movie are the four girls plus Jenna Boyd. They are all charming. They are all compelling actresses. Each one has something to contribute to the movie. The best scenes occur when the girls have a heart felt one on one. All in all, this is a sweet melodrama.