Mine did the same last time too. 42DD to 34DD. This time 40DD to 36DD so far. Shoulder blade saddle bags are going first.
I remember going into M&S and looking at the bras and getting really lost. One lady assistant, tiny thing she was, came up and offered help. She took a good look, with clothes on, sat me in the changing room and went off around the store. She came back with about 6 bras. I tried them on and each one she had me adjust myself properly and she did the bra bits. She was very discrete and polite. After about an hour we had a row of about 8 bras that were good and that she was happy with. She took me to the till and asked which I'd like to but and I said all of them!! I was so pleased to have boobs up in the right place pointing in the right direction again and that gave me a waist! I gave her a huge hug. Daft I know but I was almost emotional. One thing I did learn was, ignore the label. It's only a guide. Style makes a huge difference as well. Try on and try on until you are happy they've been enhanced and not trapped no matter what their size!