  As the New York Times notes, while men's sizes are usually
labeled in inches, thanks to "vanity sizing" women can't match
their measurements to a consistant dress size:  Take a woman
with a 27-inch waist. In Marc Jacobs's high-end line, she is
between an 8 and a 10. At Chico's, she is a triple 0. And that
does not consider whether the garment fits in the hips and bust.
(Let's not get into length; there is a reason most neighborhood
dry cleaners also offer tailoring.)  Comparing Chico's to Marc
Jacob's is misleading, since (as a saleswoman will eagerly
explain if you ever set foot in the store) they have a totally
unique sizing system. While most stores use even numbers from 0
to 14 and (occasionally) up, Chico's renamed the sizes on that
spectrum 00, 0, 1, 2, 3, and 4. Still, this does illustrate how
arbitrary clothing labels are today.  That's why Tanya Shaw is
trying to implement a fitting system to give shoppers an idea of
what size they should try on first in various stores. Her
company MyBestFit is set