I am a 29" back and 33" (loosely) across boobs. I got all excited when I was in M&S the other day and picked up 4 30C bras from the teenage section
. They feel comfortable enough (compared to the previous 34B's I was wearing) but almost seem to be compressing me more. I look far more flat chested in clothes than I ever did! I appreciate this is probably because I haven't got lots of empty bra flapping about, but do you thinkit's because I have my size a bit off? I can't imagine I would be a D cup.