PSA: a lot of people wear the wrong size of bra for them, let alone the wrong TYPE of bra/cup/underwire length for their breast tissue and appropriate lift/separation.

Save yourself the discomfort and either try and size yourself at home with a tape measure, or book a fitting at a store (if they're not free then don't go to them, that would be absurd). It's worth it to actually be comfortable in something that you wear all of the time and have to spend money on.

@GoblinHellion And don't always trust the fitter! If you're at a store that only carries a certain size range, they'll probably try to fit you into that range even if you aren't that size.

I found /r/abrathatfits super useful for tips on sizing/shape/brands to try.

@beccabadger this is very good advice!! Thank you!!

I've heard HORRID stories about fitters being terrible about people's bodies too. I've been making sure to go to stores that carry a wide range of sizes AND makes rather than something like La Senza or Aerie that only go up to D cups, and I find that they're MUCH better about not trying to shoehorn you into their own bras.

@GoblinHellion Yes exactly! Thankfully I've never experienced it as I've only ever measured myself, but I've heard stories too.

The other issue with stores is if you're wearing a wrongly sized bra when you're measured, that can throw off the numbers a bit.