Regarding the top -

I happen to be losing other places, and my tops still fit the same as before, as well. I think it is my body configuration - I have broad back and broad shoulders.

I am celebrating the other differences, as perhaps you should, as well. You have made great strides and accomplished much.

I have to ask -

Do you do a weight training routine that has developed muscles in your upper body, perhaps? In that case, you may not expect significant changes, just toning.

Sign up at mybodycomp.com and put in your measurements, too. That may help keep you motivated.