I don't have complete copies of the Delineator for 1929-1930, but by 1931 the lounging pajama (also spelled "pyjama") had moved from beach wear to formal wear. Butterick patterns even included a slip for wearing under pajamas. These pajamas, illustrated on page 72, were for casual wear. Butterick 4014: Lounging Pajamas, 1931 "4014: The three-piece type, with…
TIL the pajamas that we wear today actually have a story behind it
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