Natasha Poly, one of the topmodels today. She is 178 cm high has a waist of 23 inches. that's about 58 cm. That's a normal, thin persons upper thigh. Feel free to check yourself, but don't be startled with the result. 70 to 80 cm waist is normal. (about 27 to 32 inches). She refuses to say anything about her weight (but that's some kind of general female thing I guess)...