According to evolutionary psychology, men are often attracted to women with larger breasts because, historically, it was seen as a sign of fertility and good health, potentially indicating a woman's ability to nourish offspring.

The size of the breasts are affected by a few things, mainly hormones, body weight, and the biggest factor of all, genes. Women with higher estrogen levels may end up with slightly bigger breasts. Since breasts are made up of fat women who gain weight tend to gain in breast size as well.

However, it's generally considered that teardrop implants look more natural. Also known as anatomical implants, teardrop implants have more volume at the bottom than the top, which more accurately mimics the shape of natural breasts.

Woman's breasts weigh 89 pounds. Annie Hawkins-Turner has the largest natural breasts in the world.