Frances lost 40 pounds in five months
Her slim-down strategy: "I signed up for Medifast with my fiancé, Josh. He'd had success with it, and it seemed safe. I ate six small meals a day and didn't have time between meals to get hungry and snack on bad things."
The biggest challenge: "Some of the meals I chose weren't so pleasing—chili was a particular challenge."
Best diet tip: "Be disciplined. If that means getting a friend or your partner to help you stay accountable, do it; otherwise, it's easy to cheat."
In her gown, she felt... "Beautiful. It sounds clichéd, but the way I looked was a dream come true. The gown even had to be taken in, which made me happy."