Helpful, that, isn't it?īut guessing games aside, it is good to have a definitive number and letter to be looking out for to make shopping for a new bra (especially online) enjoyable again. Factors including weight gain or loss, your menstrual cycle, pregnancy, and hormone fluctuations all contribute, and you may even be totally different cup sizes depending on the brand you purchase. Yep, absolutely! Your bra size is always going to vary. painful red indentations where your straps were.

You might also experience discomfort such as: If your bra doesn't fit properly, chances are you're not getting the best form of support. This can lead to back pain and just plain discomfort, which is never fun. But, it's coming at a cost, because research suggests that 90% of British women are actually wearing the wrong bra size, despite the obvious telltale signs. It's something a lot of us might have done once years ago as a rite of passage (probably a shop bra-fitting back when puberty arrived), and then blissfully ignored for the foreseeable future. It's something that seems straightforward, you can easily fall down a rabbit hole of confusing information online. I'll admit it: I've Googled 'how to measure bra size' more times than I can count over the years.

Bra size calculator chart