showy
adjective disapproving uk/ˈʃəʊ.i/ us/ˈʃoʊ.i/
花哨的;招摇的;过分华丽的
attracting a lot of attention by being very colourful or bright, but without any real beauty
a showy production of a play 过分矫饰的戏剧
Her dress was too showy for such a formal occasion. 在如此正式的场合，她的服饰过于花哨了。