It may sound convincing when repeated as “common knowledge,” but the human body does not work that way.

Breast size is mainly influenced by genetics, hormones, body-fat distribution, age, pregnancy, and changes in body weight. Two women of the same height and weight can have completely different breast sizes simply because their bodies store fat differently and their genetic characteristics are different.

The anatomy of the female genital area is also highly individual. Its appearance and dimensions vary naturally from person to person, just as facial features, height, hands, or body shape do.

Most importantly, there is no reliable scientific rule saying that women with smaller breasts have a particular type or size of intimate anatomy. Having small breasts does not allow someone to predict what another part of the body looks like.

The same applies to several other popular beliefs. A woman’s height, shoe size, hip width, breast size, or overall body shape cannot reliably reveal intimate anatomical characteristics.

Hormones can influence different parts of the body during puberty and adulthood, which may be one reason these myths continue to circulate. However, sharing some hormonal influences does not mean that one visible physical characteristic can be used as an accurate measurement of another.

There is also enormous natural variation in women’s bodies. Small breasts are completely normal, just as medium or large breasts are. Likewise, external genital anatomy naturally differs considerably between individuals.

Another misconception is that visible body characteristics can predict sexual experience or sexual satisfaction. They cannot. Sexual comfort and satisfaction depend on many factors, including communication, emotional connection, personal preferences, health, arousal, and mutual respect—not breast size.

So, if you have ever heard someone claim that small breasts reveal a specific intimate characteristic, remember that it is a myth rather than a dependable biological fact.

Human bodies simply cannot be decoded that easily.

The surprising truth is actually much simpler: breast size tells you about breast size—not what the rest of a woman’s intimate anatomy looks like.