Nipples come in several shapes.

According to the length of breast protrusion, breasts can be divided into the following types:

(1) Flat type: the length of breast protrusion is less than the radius of breast base, and the breast is slightly discoid, and the bulge of chest front wall is gradually excessive, and the boundary is not obvious. There was no obvious change in breast shape when standing and supine.

(2) Hemisphere: The protruding length of the breast is equal to the radius of the breast base, which looks like a hemisphere. The breast suddenly bulges on the chest wall with obvious boundary, which is round and hemispherical. You can still see the obvious breast curve when you lie on your back. According to China's aesthetic standards, these breasts are the best.

(3) Conical shape: the length of breast protrusion is greater than the radius of breast base, and the angle between the lower edge of breast and chest wall is less than 90. The breast has an obvious downward arc, towering and slightly drooping when standing.

(4) drooping: the breast protrusion is long, and the breast droops in a bag shape when standing, and the breast droops outward when lying on your back.