So, it's basically Igna's infamy vs Yujisu's fame as the topmost author of fashion in the empire, in the eyes of all those people. Of course nobles are the kind of people who pretend to be all holy and immaculate in their taste and behavior, but in reality, below the surface, they are corrupt, greedy degenerates. In that sense presenting a scandalous lady like Igna as a fashion model could be pretty effective. You just have to crack their pretentious shell.