I'm down two band sizes.
Not that they fit perfectly - they didn't have A-cups in my size. Very few places do. Justmysize taunted me with a banner advertising A-cup bras, except when I went to order, they were on back-order. And padded. So I gave up and got more B-cups. I can ALMOST fill them.
Good thing I don't need a lot of support, right? Of course, that's because I AM that small.
However, when I put my shirt on over the new bra, I looked so much better - less sloppy. Definitely time for new bras in new size.
New size. Wow.