IP Couture: "Gelatin Slim" diet pills

This is a bit of a departure for IP Couture, but this image from the San Francisco History Center's I. Magnin records collection is too excellent not to post:

(Image courtesy of I. Magnin Records (SFH2), San Francisco History Center, San Francisco Public Library)

That's right, shopper's at high-end (and now defunct) San Francisco Department Store I. Magnin and Co. could, if they were unhappy with the way the garments were fitting, buy a pack of these diet pills. According to the trademark registration, Gelatin Slims were produced by the Gelatin Plus Corporation of Santa Monica.

Does anyone else think of Cathy cartoons when they see this?