An evolution of "Robe de Style", a unique fashion trend of the 1920s. A brief revival of the Pannier undergarment. Pictures from 1920-1930, from Les Modes : r/fashionhistory
See how: Everyone is wearing...the pyjama robe - The Glam Magazine
Casual Trends Classical Sleepwear Men's 100% Cotton Flannel Shawl Collar Robe, Size 2x Extra Large 3x Extra Large Blue at Amazon Men's Clothing store
Kendall Jenner and Gigi Hadid Push the Robe as Summer's Comfiest Trend - Racked
Men's White Flannel Robe with Navy Piping – Petite Plume
Casual Trends Classical Sleepwear Men's 100% Cotton Flannel Shawl Collar Robe, Size 2x Extra Large 3x Extra Large Blue at Amazon Men's Clothing store
KIMMORA ROBE – The Trend ground
Plus Size Style Trend: Kimono Robe and Pajama Dressing