This happened years ago, and I am talking about in the late 60s.
I offered to make a wedding dress for my then husband's cousin. No, I wasn't paid for this. I had asked the bride-to-be to wear the same foundation garments she planned to wear during the ceremony when I fitted her. She came in excellent garments to give her a great shape. (she was a bit overweight, but the garments took care of most of it). Then when the day arrived, she wore just a plain bra, panties and slip. Everything just look horrible....and everyone in the family knew I'd made the dress. I knew what they were thinking and no one would dare blame the bride for her part in 'the look'.
I've never offered to make a dress for anyone else... unless I was being paid and warned them in advance about what they would look like if they didn't abide by the rule.....wear the proper foundation garments to the fitting and the event.
Thought some of you might recognize this situation.