When I was in my 20's in the 1970's I was a size 8-10, a normal sized young woman. I had never heard of a size 1 or 0 until the past 15 years or so..... Women in the 1950's and 60's used to brag about being a size 8 like that was very slender and the ideal size. Fashion magazines used to refer to it: "she's a perfect size 8". I still think of size 8 as very slender and youthful. (I'm certainly no size 8 now! )
Size ZERO???? That means you don't even exist, right? lol!