I don't know what's happened but my bras are driving me crazy and I can hardly bare to wear one at all! I was always a 36b, then measured in a shop at 34c so that's what I'm wearing. Went to buy new bras and measured 38a but nothing fitted. However measuring myself and calculating 38c! I've recently lost a few pounds, and now the underwire is rubbing on my ribcage making it really sore. I'm going out tomorrow to find new bras, so does anywhere sell non wired, nice looking slightly padded bras? I'm envisioning the huge things my poor old nana wore and it's not really the look I was going for! 
Also can someone recommend a good accurate bra size calculator as I'm getting varying results. TIA