you aren't comparing apples to apples...the first few are of wealthy girls when dressed up...the last one is an everyday dress of a middle class woman in a completely different body type....
also realize that the women in the first three pictures never washed those dresses and only washed the under garments on a somewhat regular basis.... they also didn't wash themselves daily or possibly even weekly...
the dresses also allowed women to pee where they were standing since they didn't wear underwear or even bloomers until after the War of 1812....
are you still in love with the older way of dressing?
Here's a more realistic comparison...and this woman is still rich and dressed up....and there are plenty of examples where the cleavage is cut too low to be allowed to be posted on CF....