In the Lucy episode “Lucy Gets a Paris Gown” the gang is in Paris. Lucy and Ethel are enchanted by the work of French fashion designer Jacques Marcel and Lucy pretends to go on a hunger strike until Ricky buys her a Marcel original. Of course Ricky finds out she is pretending, so he and Fred play a trick on them. They make their own fashionable frocks out of potato sacks that Lucy and Ethel wear with pride until they realize the outfits are not real. The episode ends when the four are sitting in a cafe and see two models wearing Jacques Marcel creations that knock-off the burlap originals Lucy and Ethel wore the previous day.
One of those models, wearing the Marcel version is Georgia Holt, born Jackie Jean Crouch in 1926, but best known as Cher’s mother! Holt worked as a model in the 1940s and ’50s and did a few uncredited appearances in movies and TV shows in the 1950s.
I totally stole this story from METV if you want to check out the original.