poseur
noun [ C ] disapproving (also poser) uk/ˈpəʊ.zər/ us/ˈpoʊ.zɚ/
故作姿态的人，装腔作势的人
someone who pretends to be something they are not, or to have qualities that they do not have
You look like a real poseur in your fancy sports car! 坐在昂贵的赛车里，你看起来真够招摇的！