This was apparently considered "loungewear" in the 70s : r/ThriftStoreHauls
Seventies Vintage Womens Loungewear Robe: 70s -Gossard- Womens red, gold, green, off white and gold abstract floral print floor length nylon blend kimono inspired loungewear with cross over v-neckline met under bust
1970's men's pajamas : r/funny
Kathy Loghry Blogspot: Sizzlin 70s Sleepwear: Italian Style
These adorable 1960s nightgowns & pajamas were sweet, demure... and devastatingly pretty? - Click Americana