To have a real comparison with to our former male weight, we have to subtract the weight of our breasts! Because sometimes we feel we don't loose any weight, but we forget that we add weight to the girls! I don't know how to calculate the weight we add to our butts, but that would need to be taken into consideration, too.
Here are the weights for different boob sizes:
Determine the weight of your breasts by cup size. Once you're fairly sure where you fall on the spectrum of bra sizes, use the chart below to figure out how much your breasts might weigh. These weights were determined by calculating the volume of the breast using the average underwire size and cup diameter of common bra brands.
Bra sizes 32A, 30B, 28C = about 0.5 pound per breast
Bra sizes 34A, 32B, 30C, 28D = about 0.6 pound per breast
Bra sizes 36A, 34B, 32C, 30D, 28E = about 0.7 pound per breast
Bra sizes 38A, 36B, 34C, 32D, 30E, 28F = about 0.9 pound per breast
Bra sizes 40A, 38B, 36C, 34D, 32E, 30F, 28G = about 1.2 pounds per breast
Bra sizes 42A, 40B, 38C, 36D, 34E, 32F, 30G, 28H = about 1.5 pounds per breast
Bra sizes 44A, 42B, 40C, 38D, 36E, 34F, 32G, 30H, 28I = about 1.7 pounds per breast
Bra sizes 44B, 42C, 40D, 38E, 36F, 34G, 32H, 30I, 28J = about 2 pounds per breast