Size Guide

Our straight sizes (00-14) are fit on a size 6, and our plus sizes 14W-20W are fit on a size 16W. We use the same professional fit model each time to ensure the best, most consistent fit possible. If you need help determining your size, please don’t hesitate to email us anytime at or call us at 212-979-2229.

Size Chart

Of Mercer Size Guide

Plus Size Chart

Of Mercer Size Guide
Of Mercer Size Guide


How do your straight and plus sizes differ?
When we first started Of Mercer, we began with sizes 0 - 12, so the most natural size to fit from was a size 6. That way when we graded the pattern proportionally smaller and larger, we were starting in the middle.  However a size 6 can only be scaled so much without becoming disproportionate. As demand for more sizes grew, we added sizes 00 and 14, but beyond that, we knew if we added any more sizes we would lose the fit integrity that we know our customers value.

So for our plus styles, we started working with a second fit model, a size 16W, to make sure our size 14W - 20W styles reflect the same superior fit of our existing sizes. We adjusted seams, proportions, and hemlines to do just that. The same contemporary clothes refined to fit a more inclusive range of sizes.

What is the difference between a 14 and 14W and the XL and 1X
In order to offer the best possible range of fit we have decided to keep our existing sizes and add more to the mix.  If you are tall and broad the size 14/XL is the way to go.  If you are curvy, we recommend going with the 14W/1X. These sizes have been expertly tailored to fit a curvier figure so these will be your best fit.

Of Mercer Size Guide