The difference between a relative fit and finding a piece of clothing with that just-right feel? Completely attainable – with an understanding of alpha sizing, that is. Lost? Don’t worry. We’re about to break it down for you.

Alpha sizing is actually the designation for two numeric sizes. According to the Wall Street Journal, it’s more efficient for retailers to create four size templates (XS, S, M, L) than eight (2, 4, 6, and so on). So, while many brands still use numbers, you can expect to see more small, medium, and large designations popping up in the future.

Now, I know what you’re thinking: Why am I a size small in some stores and a medium in others? Well, the truth is, when it comes to alpha sizing, there’s just no standardized way to combine two sizes. But don’t fret. S, M, L doesn’t have to mean FML. Simply utilize the dressing room, and when online, check out the product details. Here at Rue, we provide the measurements of each and every item to create a virtual fitting room for our Members.

By Jillian Hudon, Staff Writer

Want the lowdown on fabrics and more? Follow our What Are You (Really) Wearing? column.

Not a Member and like The (Style) Guide? You’ll love Rue La La. Join now.