An average human head weighs around 5 kilograms, or 11 pounds, and while a head with the skull inside it will be denser than a boob which is just fat, the difference isn't as much as you'd think - after all, your actual brain at least is 60% fat by weight. So a boob that is a bit bigger than its owner's head (say, just big enough that the head could fit comfortably inside the breast) will probably weigh around 5kg/11lbs.
This girl's breasts look like they're each about 2-3 times the volume of her head, which would mean that they'd be somewhere between 10 and 15 kg apiece, or 22-33 pounds, with the total weight of both put together being 20-30kg/44-66lbs.
An average human head weighs around 5 kilograms, or 11 pounds, and while a head with the skull inside it will be denser than a boob which is just fat, the difference isn't as much as you'd think - after all, your actual brain at least is 60% fat by weight. So a boob that is a bit bigger than its owner's head (say, just big enough that the head could fit comfortably inside the breast) will probably weigh around 5kg/11lbs.
This girl's breasts look like they're each about 2-3 times the volume of her head, which would mean that they'd be somewhere between 10 and 15 kg apiece, or 22-33 pounds, with the total weight of both put together being 20-30kg/44-66lbs.