Ukraine is not like much more traditional countries to the east or south where women are expected to be virgins at marriage and may even undergo special surgery to "restore" their virginity in order to not shame their husband and his family.
It is also not a place where men are expected to be sexually experienced and promiscuous and women are expected to be virtuous, chaste, and generally bashful and passive about sexual matters.
Consider that some of the perceived beauty might actually turn out to be a kind of "optical illusion."To get a more well-rounded picture of Ukrainian women after being dazzled by the beauty on display on Khreschatyk Street in summer, try spending some time on minibuses in outlying neighborhoods of the city in colder months of the year.
Note that what is written in this section is more true of urban women than women from small towns and villages, where more traditional behavior is the norm.
Also, western Ukrainians are more religious on average than predominantly Russian-speaking Ukrainians in the east and south and will tend to be slightly more conservative. As of 2010 women could buy contraceptive pills without a doctor's prescription.
Feminine, long-legged blondes are the object of many eastern men's sexual fantasies.
Women in their home countries are often dark-haired, swarthy, and short or short-legged. Many or most Ukrainian women have somewhat traditional gender role expectations, which makes them compatible with men from the East and South.
Women generally do not feel too much shame about eroticism or enticing a man sexually.
Prostitution is officially illegal but widespread and rarely punished by law enforcement.
Head to a nightclub and you'll be bedazzled by carefree, gyrating "devushki." Open your mouth and say something with a fine British, Scottish, or Australian accent (American might work, too) and you're an instant winner. In Ukraine one can often hear foreign men gripe about the women in their countries: "unrealistic financial expectations...", "too success-oriented...", "don't take care of themselves...", "not nearly as feminine..." For such men, Ukrainian women can be irresistable.
They seem to have lower expectations and to be more domestic, feminine, and attentive to their appearance.
On the other hand, I note how so many women of plain appearance who seem frumpy and indifferent in the United States have Ukrainian counterparts who dress up and take care of themselves to accentuate their better parts and compensate for what is not-so-perfect.
I do not believe that the Ukrainians have any inherent physical advantage.
In the past decade obesity has gone mainstream and is now a problem for children and even a large number of student-age women, who were almost all thin ten years ago.