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.

casts

Amber Tamblyn

America Ferrera

Blake Lively

Alexis Bledel

Bradley Whitford