Breast Size

Breast Size & Mating associations

In the studies it was aimed to extend knowledge on the relationships between breast size and some mating-relevant characteristics and on the perception of women in relation to their breast size. 

First study encompassed 163 young women and aimed to establish actual correlates of breast size. The aim of the second study was to determine preferences and stereotypes related to breast size: 252–265 women and men evaluated female digital figures varying in, among other characteristics, breast size.

Large-breasted women were of similar attractiveness to women with average breasts and much more attractive than females with a small bust. Women and men perceived breasts in a similar way to each other: the bigger the breasts the higher the reproductive efficiency, lactational efficiency, sexual desire, and promiscuity attributed to the woman.

Big-breasted women were perceived as less faithful and less intelligent than women with average or small breasts.

Attribution of sexual permissiveness to large-breasted women is an incorrect stereotype since openness to casual sex proved to be unrelated to breast size. Men who seek short-term relationships should be aware that a large bust is not a cue to a woman’s promiscuity. There also exist strong stereotypes associating breast size with reproductive and, particularly, lactational efficiency even though any real relationships between these traits are uncertain.

Studies were carried out in one of the so-called WEIRD (Western, educated, industrialized, rich, and democratic) societies.


Breast firmness is of greater importance for women's attractiveness than breast size

Reasearch showed that both men and women preferred breasts of average or slightly above-average size and high or extreme firmness. Glandular ptosis was as important for attractiveness as breast size, but true ptosis was of much greater importance. Men preferred slightly bigger breasts than women.


Breast size, bra fit and thoracic pain in young women

Study among young women students showed that most (80%) women wore incorrectly sized bras: 70% wore bras that were too small, 10% wore bras that were too large.

Large breasted women were particularly likely to be wearing incorrectly sized and fitted bras.

In young, nulliparous women, thoracic pain appears unrelated to breast size.

Bra fit is moderately related to stage of menstrual cycle suggesting that this research may be somewhat confounded by hormonal changes or reproductive stage. Further research is needed to clarify whether there is a relationship between breast size or bra fit and thoracic pain in women during times of hormonal change.

This point in time snapshot of young adult women students reporting thoracic spinal pain suggests that there is little meaningful correlation between breast size and pain intensity, or between pain and bra fit. Breast size correlated strongly and negatively with bra size, and moderately with bra fit, but was not highly correlated with pain severity.


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