The title is a spin on “the wonderful ice cream suit” by Ray Bradbury, which similarly had transformative effects on its wearers.
https://www.saturdayeveningpost.com/wp-content/uploads/satev...
https://www.saturdayeveningpost.com/wp-content/uploads/satev...
https://en.wikipedia.org/wiki/The_Man_in_the_Brown_Suit (1924)
or https://en.wikipedia.org/wiki/The_Man_in_the_White_Suit or https://en.wikipedia.org/wiki/The_Man_in_the_Gray_Flannel_Su... (from the 50s) or even https://en.wikipedia.org/wiki/The_Woman_in_White_(novel)