How do you alter a prom dress?

Alterations on a prom dress can be very complicated, as some dresses have multiple layers and intricate detailing. Unless you have sufficient knowledge in sewing, I would not recommend attempting this on your own. Prom dresses are typically very expensive and if you ruined the dress with inexperienced sewing you would be out a lot of money. I recommend finding a local seamstress to alter your dress. This can be as inexpensive as $10 depending on the area and alterations needed. Check the yellow pages, online, or local bridal stores to find a seamstress in your area.