Lavinia hadn't participated on the whole Dress Up situation, not only was she already dressed but on this new form of her she felt way less inhibition and thus didn't care much about the common dress up code.

Either way, after a quick time waiting she proceeded to join Terra in the journey onward, she had to stop herself from giggling when the guard asked if they were armed even if he could clearly see that they had a dragon with them.

After that she taught things would move on naturally and softly but then the thunderous voice was heard "Oh wow, if that is Serenity her parents had a wicked sense of humor"