Bitchy cheerleaders and swimming pool catfights are just two of the tedious cliches propping up this brittle comedy about the undying hatred between former high school classmates. Kristen Bell (Couples Retreat) stars as the mousey victim of the most popular girl on campus (Odette Yustman); now a glamorous PR executive, Bell can’t believe her brother is about to marry her old nemesis. Adding to the friction is the bride’s hypercompetitive aunt (Sigourney Weaver), the long-estranged best friend of Bell’s mom (Jamie Lee Curtis). Betty White, playing yet another dirty old lady, hardly elevates the proceedings, in which otherwise reasonable women settle petty scores by flinging pea soup and chinaware. Andy Fickman (The Game Plan) directed.