noun, noun or participle which takes 'suru', intransitive verb
buying all the clothes displayed on a mannequin
Colloquial term for purchasing an entire outfit exactly as styled on a store mannequin, often to avoid the effort of coordinating pieces oneself.
時間がなかったので、マネキン買いでコーデを決めた。
I didn't have time, so I decided my outfit by buying the whole mannequin look.
彼女はいつもマネキン買いするから、おしゃれに見える。
She always buys the full mannequin outfit, so she looks stylish.