"History -- make that high school -- may repeat itself when Marni (Kristen Bell) learns that Joanna (Odette Yustman), the mean girl from her past, is set to be her sister-in-law. Before the wedding bells toll, Marni must show her brother that a tiger doesn't change its stripes. On Marni's side is her mother, Gail (Jamie Lee Curtis); Joanna's backed by wealthy Aunt Ramona (Sigourney Weaver). Kristin Chenoweth plays wedding planner Monique Leroux."