(n.) One who impersonates; an actor; a mimic.

ape artist artiste belly dancer blagueur bluff bluffer burlesque queen charlatan chorine chorus boy chorus girl conformist conjurer copier copycat copyist coryphee counterfeiter cuckoo dancer dancing girl dissembler dissimulator ecdysiast echo echoer echoist entertainer exotic dancer fake faker female impersonator forger fourflusher fraud geisha geisha girl guisard guiser hoofer humbug hypocrite imitator impostor incognita incognito magician malingerer masker masquerader mime mimer mimic mimicker mocker mockingbird monkey mountebank mummer musician nautch girl parrot peeler performer phony plagiarist playactor player poll-parrot polly polly-parrot poser poseur prestidigitator pretender public entertainer quack quacksalver quackster ringer saltimbanco sham shammer sheep show girl simulator singer stripper stripteaser stripteuse thespian trouper vaudevillian vaudevillist