Very surprising to me, there were also beauty contests in the (good) old times. Here are some Miss USSR's (Мисс СССР)...
So here is the undeniable proof of this evolution: Tatyana Kotova, Miss Russia 2006...
And here are some details (for who is interested):
Name: Котова Татьяна (Tatyana Kotova)
City: Ростов-на-Дону (Rostov-on-Don...south of Russia)
Объем груди: 93,5
Объем талии: 67
Объем бедер: 93(I think I don't need to translate the last three...)