Kirsten Dunst

Character: Regan Crawford

Rebel Wilson

Character: Becky Archer

Lizzy Caplan

Character: Gena Myers

Isla Fisher

Character: Katie Lawrence

James Marsden

Character: Trevor Graham

Adam Scott

Character: Clyde Goddard

Kyle Bornheimer

Character: Joe Barnes

Hayes MacArthur

Character: Dale Beaumont

Ann Dowd

Character: Victoria Archer

Andrew Rannells

Character: Manny

Sue Jean Kim

Character: Wedding Planner

Ella Rae Peck

Character: Stefanie

Shauna Miles

Character: Theresa

Arden Myrin

Character: Melissa

Candy Buckley

Character: Sheila

Horatio Sanz

Character: Barely Attractive Guy

June Diane Raphael

Character: Cool Stripper

Paul Corning Jr.

Character: Jack Johnson Guy

Anna Rose Hopkins

Character: Club Monaco Customer

Megan Neuringer

Character: Singing Cousin 1

Leslie Meisel

Character: Singing Cousin 2

Jenn Schatz

Character: Geeky Bridesmaid

Beth Hoyt

Character: Blonde Bridesmaid

Melissa Stephens

Character: Wasted Stripper

Chris Cardona

Character: Scores Bouncer

Erik Parian

Character: Band Singer