Annie's life is a mess. But when she finds out her lifetime best friend is engaged, she simply must serve as Lillian's maid of honor. Though lovelorn and broke, Annie bluffs her way through the expensive and bizarre rituals. With one chance to get it perfect, she’ll show Lillian and her bridesmaids just how far you’ll go for someone you love.
Kristen Wiig
as Annie Walker
Maya Rudolph
as Lillian Donovan
Rose Byrne
as Helen Harris
Chris O'Dowd
as Officer Rhodes
Wendi McLendon-Covey
as Rita
Ellie Kemper
as Becca
Melissa McCarthy
as Megan Price
Jon Hamm
as Ted
Jill Clayburgh
as Judy Walker
Rebel Wilson
as Brynn
Matt Lucas
as Gil
Michael Hitchcock
as Don Cholodecki
