36A and 34B — they're both technically a B cup. They're called

Women's Clothing - Dresses, Pants & Blouses - Chico's

Aladdin's Magic Lamp

Finally, Bra Sizes Explained – Understanding How Bra And Cup Sizes Work – ThirdLove

What is the difference between 36A and 36B bra sizes in India? - Quora

we all have our preferences 🤷🏻‍♂️ : r/Tinder

80% of Women Are Wearing the Wrong Bra—Here's How to Find Your Correct Size

When your boob equivalent isn't mentioned and probably could feed an entire school. : r/bigboobproblems

If I wear a 38C in bra size can I fit into a 34DD or a 32DDD/E? I know they are 'sister sizes' but how do I know which one fits me

Bra Sister Sizes To The Rescue - Sisterhood Of Bras

Security Check Required Sister bra sizes, Bra size charts, Life hacks every girl should know

What is my bra size?

34B Bras: Equivalents Bra Cup Sizes, Boobs and Breast Size - HauteFlair

Comparing Cup Sizes: A vs. B vs. C vs. D Cup Size