Barbara, I have two Jean Louis pieces your friend might be interested in. One is a white pique haltar evening gown. The other has a leotard top with a lace ruffle and a separate lace skirt. Supposedly, it was Mary Martins, but I don't think so the skirt is too long for me and I think she was shorter..
The leotard top is interesting. It's an actual leotard; the lace ruffle snaps on part of the neckline so you can get it on and off.
I used to see Jean Louis at acupuncture. Sadly, he already had alzheimers, but Loretta Young sometimes brought him. No, I didn't talk to her. I'm much too shy and it wasn't the right place.