I couldn't find a more recent thread about this. how much do you weigh and how tall are you and what size do you wear now and used to wear?
I am 167 pounds, 5.4. I wear 10-12 in pants, S in men's shirts M-L in women's shirts. I wear a DD size bra.
When I was 236 I was 20-24 in pants, XL in men's shirts, and 2X-3X in women's shirts. It was pretty depressing.