If your dress isn't fitting as well as it once did, your seamstress can help. Make your concerns known, and discuss a timeline for fittings that works for both of you. You should aim to have your last dress fitting as close to your wedding as possible, and you might even ask if someone will be available the day of in case there's a problem. Knowing exactly what to expect can put your mind at ease and help you feel more confident leading up to the big day.