Lucky is the bride who finds the perfect dress that fits beautifully, first time
Most wedding dresses purchased will require some alterations, whether it's the neckline, waistline or length that needs to be altered. Your wedding dress shop owner may have the skills to do this for you, or recommend an outsourced dressmaker that can do the job for you after purchase.
Depending on the amount of alterations needed, there will be a cost implication so check this out beforehand. Don't be tempted to run the risk with your expensive wedding gown, to choose an alteration service that is low cost or one not experienced with the requirements of working with wedding gowns. Get recommendations and follow them all up with any past customers, to make sure you'll get exactly the fit you expect and finish that is perfect.