30E bra size!!i’m confused. help!?

I used to wear 32C, my breasts grew a little bit and 32 C fits but I spill out of them bit. I was measured in Victoria’s Secret New York and I was told I was 32C or 34B. I then got measured in London and was told I was 30E!. 30E sounds like a porn star size even though the bra’s I tried on fit. I am quite slim, 5′9” and size 8 and my breast dont look very big in clothes. Have bra sizes changed in the uk or is that normal.

each country has a different standard of measurement with bras so 30 E probably isnt the E here.

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