Bra sizing

Am I the only woman that didn't know that cup sizes are not the same across all bra sizes? I read an article about bra sizes recently and how to measure. I have been wearing a 36 C for years but I lost 20 lbs recently and found out I should be wearing a 34. I bought a 34 C today in the same cut bra I always wear and the cups are too small.

I just found this on Wikipedia:
There is a common misconception that cup sizes are the same across all bra sizes, meaning that a B cup on a 34 is the same size as on a 36, but in fact they are relative to the size of the band, so the same cup size is bigger on a bigger band size. Bra manufacturers refer to a cup volume instead of to a cup size as defined above. For instance, the cup volume is the same for 30D, 32C, 34B, 36A, etc

I am 34 years old and I never knew this. Am I the only one?

Re: Bra sizing

Not the only one - I never knew that, but it explains why I am different sizes in different bras!

Re: Bra sizing

Yes, it is true - I am either a 30E or a 32DD depending on the bra style and brand. You should get a professional fitting.

Re: Bra sizing

It's so true. Ugh I am a nightmare to size in a bra!