On the Reformation website, customers can find a detailed size guide for all types of clothes. Also, the company claims that they spend much time fitting their clothes on different body types and sizes, to make sure everyone can get the perfect fit.
Scrolling through Reformation reviews only a few customers seem to be unhappy with the size or fit of their orders, while others rate the brand true to size. However, according to overall Reformation sizing reviews, it seems that Reformation dresses tend to run small, so in case you are in-between sizes, sizing up might be a good idea.