Apparently I'm a 30D? I have small boobs, does that sound right

Aerie Real Happy Demi Lightly Lined Bra

This might be a dumb question but what does the 13/31 mean on this tag? What size should I list it as on depop? Thank you : r/VintageClothing

Please help with measurements/ size - 32A : r/ABraThatFits

13 Questions for a Bra Whisperer

How to figure the right size of bra? 34c is too tight and the cup is large. Google measurements shows 36c is suitable. Is it - Quora

Sid Chambers, PhD on X: Finally get a bra ad like I've been asking for. … for small boobs 😠 JUST ONE TIME GIVE ME AN AD THAT MIGHT BE USEFUL! FFS

Putting your bra on properly

🌱 — sameatschildren: bra-advice

Where can I find bras that are in between sizes? 34B is too small for me, but a 34C-cup is too big. - Quora