What are Breasts?

Within these tissues is a system of blood vessels, nerves and lymph nodes / vessels. Ligaments join the breasts to the body. (But breasts themselves don't contain muscle.)
The different, annular area of skin surrounding the nipple is called the areola.
Beneath the areola are milk ducts which deliver milk to the nipple. The milk ducts are joined to 15 20 lobes and mammary glands (also called lobules), which generate breast milk (mostly) in nursing women.
Below is an image that depicts the anatomy of female breasts:
Female Breast Anatomy
What are Mammary Glands?
Mammary glands are modified sweat glands that are present in both women and men.
Man vs Female Breast and Nipple
Male breasts are virtually indistinguishable to female breasts. It's a little known fact that guys, just like women, possess mammary glands. While it seldom happens, you'll find guys that have the skill to lactate and breastfeed.
Despite the anatomical likeness, male and female breasts are viewed rather differently in America. This is largely due to an overriding social and cultural affiliation between female breasts and sexuality.
As formerly stated, female breasts aren't sex organs, but they are often viewed as sexual objects. Breasts are hypersexualized. They are used to sell all types of different products and to serve heterosexual male delight. But at the same time, women are shamed into covering them up. Actually, https://s3.amazonaws.com/u-naturist/russian-nude-beach.html are shamed even when they're trying to breastfeed, which will be the main biological function of breasts.
Arby's advertising using breasts to sell burgers and depicting breasts as things to freely grab and "drool over."
SuitSupply advertisements men's suits with topless women
Both men and women (and people of any gender) can derive sexual pleasure from their breasts and nipples. A man's naked torso can also just as easily inspire lust in the opposite gender (or the same sex). This fact is usually dismissed because society has a tendency to blow off female sexual desires and tends to condemn sexual girls by slut-shaming them. Most of the mainstream media in the USA is focused on the sexual desires of straight men.
Apart from torso hair, male and female breasts usually are not that different in appearance. Some men have larger breasts than certain girls, which can be often pointed out by supporters of topfree equality for women.
nudist colony between a male and female breast is that one is sexualized and fetishized while the other isn't. Breasts are not sexual in and of themselves. It is our society and culture that sexualizes them.
What are considered "ordinary" breasts?
If we went by what we find in the media, we had believe "ordinary" female breasts are perfectly round, symmetrical, perky, with smooth skin, small pink nipples and substantial in size (or at least big enough to form a noticeable cleavage). Male breasts in the media are constantly muscular, well defined, chiseled and almost level.
But this is not reality! There's no "normal" standard for men or girls.
They can be quite small with the nipple being the most defining feature, others may be quite substantial and protrude a few inches from your body (and all sizes in between). Breasts can be round, cylindrical, sit high on the chest or droop down lower and they've been all normal.
Breast size also does not always correspond with body type or size. Bigger women may have little breasts and thinner women can have big breasts. (Losing or gaining weight can impact breast size, but it depends on a person's fat tissue and genetic make-up. Regardless, they'll just change up to a point and it's normally not a radical increase or decline in cup size.)
Areolae and nipples differ in color and size. They come in all different colors of pink and brown. The size of the areola or nipple doesn't depend on breast size. Large breasts can have little areolae or nipples and vice versa. Nipples may additionally be "inverted," which means they retract inward. This can be normal and can be seen on both women and men.

It's extremely common for girls to have asymmetrical breasts, where one is bigger than the other (even one cup size larger).
"Sagging" is also very common and completely normal. https://s3.amazonaws.com/u-naturist/young-nudist-family.html that holds the breast will, over time, naturally assume a lower hanging standing as a result of gravitation and skin elasticity.
In regards to breasts, the vast majority of variations are totally normal and must not be any reason for concern.
Why do breasts change so much from person to person?
Different types of tissue in breasts, our muscle / fat composition and hormones can all vary and they all discover what our breasts will look like. Or the easier answer is: genetics.
For girls, breasts additionally change throughout their lives and go through smaller changes during fertility / menstrual cycles. (* Nonetheless, experts warn that any unexpected change in breast texture, size, contour or appearance should be reported into a doctor promptly, as these might be signs of breast cancer or other potentially serious health problems.)
The photo below is from Laura Dodsworth's publication, Bare Reality. The novel explores many themes in relation to women's breasts, for example body image, sexuality, equality, breast cancer, femininity, what it indicates to be a woman, and more.
It's an amazing piece of work that illustrates the diversity of women's bodies and women's view on them.
Picture of female breasts and diversity in the Bare Reality project http://barereality.net