Season 5: Episode 108: If the Dress Fits, Wear It
Clair discovers that the dress that she wants to wear to an upcoming benefit no longer fits. Her designer friend estimates that she would have to lose five pounds in the next six days to fit comfortably into the dress. She wants to keep her quest to lose weight a secret from Cliff, but he overhears her discussing it with her friend. Clair signs up for an exercise class, where the demanding instructor belittles the students--especially Clair. She realizes that Emma's criticism is exactly what she needs, and decides to hire her as her personal trainer for the week. Clair suffers severe leg cramps in the middle of the night. Cliff cooks a fabulous Mexican meal for the sole purpose of tempting Clair and getting on her nerves. She resists the urge to break her diet. However, she nearly lets her hunger get the better of her a few days later. She stops herself from eating the leftovers when Cliff comes home early from the hospital. On the night of the benefit, Clair tricks Cliff into believing that she failed to lose the weight. She then stuns him by emerging from their room in the dress.