poseur

noun

1. One who affects some behaviour, style, attitude or other condition, often to impress or influence others.

   “He pretends he's an artist, but he's just a poseur.”

   “She only dresses like that because she thinks she is getting the boys' attention; she's such a poseur.”

   “But he was also, what seems almost incompatible with this ferocious truthfulness, excessively self-conscious and morally attitudinising, a thin-skinned poseur.”

   “I am a poseur and I don't care / I like to make people stare”