"Headless mannequins" refers to mannequins, or human-like models typically seen in stores, that do not have a head attached to their bodies. Full definition
In Colonial Arrangements, a site - specific exhibition in partnership with the Historic House Trust, UK - born Nigerian artist Yinka Shonibare MBE conjures Eliza's specter with headless mannequins clothed in Dutch wax fabric lurking in the period rooms. (hyperallergic.com)
His tableaux of headless mannequins costumed in this fabric evoke themes of history and its legacy for future generations. (brooklynmuseum.org)
Though it's been widely assumed that he has never actually resided in this most spacious of spaces, it's really fun to think about Karl going to sleep with a creepy, giant, headless mannequin form watching over him. (fashionista.com)