I've always worn 32/34A bras but calculator suggests 30C. Need

I measured as said to do online in a calculator, and it came out as 28 D, but my breasts look too small to be an A, I'm 13, how do I

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Bras: What is Sister Sizing? Bra Sizing Explained by Kimmay

People are learning their real bra sizes thanks to a calculator that's gone viral on TikTok

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How to measure bra size using a bra size calculator and chart visualization - Quora

What is my bra size? My underbust is 28 inches and bust is 32 inches. I was previously recommended a 28D, but the band was too tight, so it didn't fit. - Quora

Online Bra Size Calculators Are Misleading, Terribly Misleading – Bras & Fibromyalgia

When the market is so messed up that even ads for smaller boobs can't even get women in properly fitting bras, yet they are having these girls say it fits perfectly 🙄