Are you suggesting she doesn't work out 
This is a very fit figure.
Romanians have the lowest obesity rates and are the slimmest women in Europe. Probably because they are also very poor. There is an almost complete absence of fast food places there, and everything they eat is pretty much natural and unprocessed.
I have a theory that all the crap that we eat in the west, affects the hormones and causes a change in fat and muscle distribution in women. I traveled around a lot of eastern europe, and was amazed at how many women you see in good physical shape, even if they have an ugly face, the body is usually pretty good. Most of them don't work out, but usually do sports or just generally active, cycling, walking, fucking etc ;-) Drink regularly but with out getting hammered. Eat a lot of food, but generally its all good simple local farm grown food.