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At OOMLA, we simplified bra sizing. We had to, because we made a garment designed to fit a wide range of body shapes, sizes, and ages. We couldn’t possibly use the typical sizing system of number + letter for young girls with barely-there boobs – 28AAA anyone?? – when it doesn’t even work well for many women with been-there-awhile boobs. Just ask anyone who’s a 34D but been told they can wear a 36C, because technically they’re supposed to fit the same but they don’t. Then we thought about a small/medium/large system, but those terms felt weirdly judgey, not to mention they mean absolutely nothing when it comes to boobs. Is a 34D medium? Large? Small??? It all depends on the basis of comparison. And so…
Our measuring system is really simple: your OOMBRA size is the number of inches around your chest measured at the biggest part of your boobs. No boobs yet? No problem! Got boobs! Then we’ve got you covered at least until your chest is more than 38”. And hopefully soon, we’ll cover more than that.
In bra lingo, the measurement we use is called the overbust. This is the number of inches around your chest at its biggest point, including your nipples. To get your sizing right:
*Don’t have a measuring tape? Improvise! Use anything that can safely wrap around you, like a phone charging cord, a long piece of twine or masking tape. Just make sure whatever you choose has no elastic or stretchability – If it stretches, you will under-measure – so don’t use string that elongates when you pull it or an elastic band. Once you have finished your wrap, remove the item and lay it flat on a surface. Using a ruler, measure the length that wrapped around you.
Even though OOMBRAs only rely upon one measurement – the overbust – for sizing, we do use the underbust in our design. If you’re the kind of person who prefers to know more precise measurements, check out our sizing grid below.