Here is a photos of a grandmother, mother and a daughter and you can easily see the difference Tracey Stanton says "I got my first bra when I was 11 - I was a 32A and one of the first girls at school to need a bra. At 15, I wore a 32E. It seemed unusual considering my mother and grandmother had never been that big, and most of my school friends were still wearing B-cups. I'm now a 32G and have been this size since I was 20."The average bra size in the UK is now 36C, whereas just a decade ago it was 34B. Previously atMarks & Spencer's lingerie department you could get only upto G cups