I can't sew but my grandma sewed for Ceil Chapman for decades. I used to tear out ads in the NY Times for dresses from Saks Fifth Avenue, hand them to my grandma, and she'd consult with me about the fabric and give me the dress in a day or so.
Have I told you guys about Fit2Stitch?
This is my favorite episode - a dissection of a Christian Dior dress:
<3 <3 <3
https://www.pbs.org/video/inside-the-details-of-christian-dior-LSb8HG/









