what is the average cost for an alteration on a prom dress
1 The price of having a prom dress altered will depend on your height and what needs to be done. 2  Most prom dress alterations will cost anywhere from as little as $5 to as much as $95. 3  Most of the time, it is best to budget $30 to $65 but no more than $100. The same can be said for dresses that have more than one layer. 2  Plan on spending around $10 to $15 per layer. 3  A shawl that is added to a dress will be an additional charge on top of the alteration. 4  Rush charges can add an additional $20 to $40 to the job.