(n.) One whose ambition it is to gain admiration by showy dress; a coxcomb; an inferior dandy.

Beau Brummel arbiter of fashion beau blade blood boulevardier buck clotheshorse clubman clubwoman coxcomb dandy deb debutante dude exquisite fashion plate fashionable fine gentleman fribble gallant jack-a-dandy jackanapes lady-killer lounge lizard macaroni man-about-town masher mondain mondaine puppy socialite spark sport subdeb subdebutante swell swinger taste-maker tone-setter trend-setter