Does anyone know how many sizes can be offset by using a seamstress? For example I have some dresses and skirts that are a size 20 and I am now fitting into a 16 (YEAH!) and I am wondering if they can be taken down by a seamstress or if that is too much of a size change and they won't look/fit as they originally did....thanks for any insight.

Anything can be taken in, it just depends on how much work needs to be done. Depending on the clothing it can get pricey. I have a few suits that are fully lined. They would have to practically be remade to take in. It involves taking out the lining and readjusting both the garment and the lining. I'm going to dry clean them and sell them. On the other hand I have a few summer dresses that would be relatively simple to take them in. One is a sort of fit and flare style that can be taken in on the bodice and sides inexpensively.