Gabriela's new "dress"

So, here is the story with the dress. A few days ago, Gabby got dressed for school. When I went in to check on her I found her wearing one of my maternity shirts as a dress. I said, "Gabby you can't wear that to school." She asked why not and I said it was a pregnant shirt. She said, "It looks like a dress on me." After some arguement I let her wear it under the condition that she wear tights and an undershirt. She wondered why an undershirt and I explained that the neck was a bit too wide and that someone might see her chest. Her response was, "Mom, I need a bra!"