Amber Tamblyn as Tibby Rollins

America Ferrera as Carmen Lowell

Blake Lively as Bridget Vreeland

Alexis Bledel as Lena Kaligaris

Rachel Nichols as Julia Beckwith

Tom Wisdom as Ian

Rachel Ticotin as Christina Lowell

Leonardo Nam as Brian McBrian

Michael Rady as Kostas Dounas

Shohreh Aghdashloo as Professor Nasrin Mehani

Blythe Danner as Greta

Jesse Williams as Leo

Lucy Hale as Effie Kaligaris

Maria Konstadarou as Yia Yia

Ernie Lively as Franz Vreeland

Stevie Ray Dallimore as Nigel O'Bannon

Alison Folland as Stage Manager Margaret

Zacharoula Klimatsaki as Melia

Paul Coughlan as David Breckman

Rebekah Aramini as Ariadne Kaligaris

Cory Nichols as Nicky Rollins

Carly Rose Sonenclar as Katherine Rollins

Adrienne Bailon-Houghton as Cute Video Couple Girl

Kiely Williams as Yaffa Waitress

Kyle MacLachlan as Bill Kerr (uncredited)

Harry L. Seddon as Tibby's Dad (uncredited)

Victor Slezak as Doctor

Marceline Hugot as Nurse