What are some good vintage stores?

It seems like any vintage shop I go to on Montrose all sell clothes from the late ‘90s to early 2000s.

Are there any good shops that sell items from way before then? My tastes are specifically more ‘50s Dior dresses or ‘60s Givenchy pieces.

Buying online can sometimes be a hassle because the clothes will come in and then it just doesn’t fit! Having a good in person experience is something I’m looking for.