hiya ruby i had my op last wk, i am a size 8-10, 8 stone and was wearing a 34b bra. i went for 340cc over and im now in a 34d bra. i was in a 36d after op but after swelling i went bk to a 34d.i think if you want dd i would go for 380cc or 410. i am getting my pre and after pictures of nurse on the 20th dec i will send them to u if u want xx