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.
Amber Tamblyn
as Tibby Rollins
America Ferrera
as Carmen Lowell
Blake Lively
as Bridget Vreeland
Alexis Bledel
as Lena Kaligaris
Bradley Whitford
as Al Lowell
Nancy Travis
as Lydia Rodman
Rachel Ticotin
as Christina Lowell
Jenna Boyd
as Bailey Graffman
Mike Vogel
as Eric Richman
Michael Rady
as Kostas Dounas
Leonardo Nam
as Brian McBrian
Μαρία Κωνσταντάρου
as Yia Yia
