Seems that they changed Marida's incognito casual outfit from the first volume there.
It was describe that Marida was dressed "in a fitting blazer with a mini skirt, her long hair tied togther and left to flow onto the back. Standing upright with her chest out, it hard to miss her good looking figure even from afar. Anyone could have mistaken her for a secretary from a large coperation." From that little cap, she doesn't look anything like how the text makes her out to be.