铺张的，摆阔的;炫耀的，卖弄的;招摇的too obviously showing your money, possessions, or power, in an attempt to make other people notice and admire you
They criticized the ostentatious lifestyle of their leaders. 他们批评领导们铺张的生活方式。
an ostentatious gesture/manner 夸张的手势／举止