Some sentence examples which use the word 'ostentatious'
She dresses in a very ostentatious manner.
From the moment that he became primate of Ireland, Stone proved himself more a politician than an ecclesiastic. "He was said to have been selfish, worldly-minded, ambitious and ostentatious; and he was accused, though very probably falsely, of gross private vice."
His ostentatious hatred of the revolutionary parties marked him out as the natural object for these accusations.