Hi, when i had my boobs done four years ago i was a size twelve, and im 5,11 n half. My boobs had shrunk for same reason, weight up n down and had one baby by then so they were saggy to. I was a 34b, and had 435 high profile unders, which took me to a 36d, but when i gain weight like now (im a stone more and one dress size more since my second baby a year ago) they go to a 36dd, they dont look massive or disproportionate which is what i wanted, with a tall frame u need to have reasonable size implants, hope this helps xx