So why do we call this a Muumuu? Well, linguistic spread & tourism, mostly. Your granny might have worn Muumuus as they were popularized in the US as house dresses, maternity wear & nightgowns, but The muumuus with the buttons @muuvmentbyfee #muuvmentbyfee #muumuu # moomoo #kaftan #comfortablefashion Plus Size Women's Ink Spotted Magenta or Teal Cotton Print Sleep Gown Muumuu Moo Moo Dress Customizable 1x 9x MOO MOO DRESS W SEAHORSES Pharm Favorites by Economy Pharmacy LOUSEA Moo Moo for Women red and Gold Caftan Dress Plus Size Swimsuit Cover up Oversized Kaftan Dresses Embroidery Print Dress (Red,One Size) at Amazon Women's Clothing store Vintage 60s 70s floral Aloha MuuMuu dress with Pocket One Size Hey Tiger