Hmm. It would nice to be able to declare that this women-on-top revenge comedy presents a sparky gender-role inversion, but instead it just trots out the usual cliches in tired and increasingly tiresome fashion. Leslie Mann is the beautiful but ditzy housewife who teams up with her philandering husband's mistresses (sharp-shooting Cameron Diaz, pulchritudinous Kate Upton) to teach the bastard a lesson involving laxatives, hair removal cream and other well-worn tools of the trade. Lacking the sharp writing of The First Wives Club, Nick Cassavetes's "candy-dipped" comedy lurches in ungainly fashion between increasingly contrived set-pieces, its three stars flailing their way through the over-cranked scenic caper japes with little or no sense of sisters actually doing it for themselves. Or each other. Or us.