Four best friends (Tibby, Lena, Carmen & Bridget) who buy a mysterious pair of pants that fits each of them, despite their differing sizes, and makes whoever wears them feel fabulous. When faced with the prospect of spending their first summer apart, the pals decide they'll swap the pants so that each girl in turn can enjoy the magic.

With surprisingly touching earnestness, The Sisterhood of The Traveling Pants follows four best friends as they try on adulthood — and though it isn't an easy fit, their journey becomes bearable thanks to the threads they share.