
They do that sometimes, when it's clear, that the person is from the royal family, but that probably isn't the case, since she is a marriage candidate and unlike real historical royals, webtoon royals are not that big on marrying two close relatives. And as I said before, they would have to address Oscar as prince as well, because they are siblings. It seems, that everyone is just trying to appeal to her, because she is a very likely marriage candidate, based on her lineage(despite knowing nothing about the prince). Can't wait to see that face crack, once she sees, who is actually gonna marry the prince
The fact, that Oscar's sister makes other people call her princess, is what's gonna make her downfall so much better. Can't wait for her, to see Aria by the prince's side