✔ 最佳答案
The problem is that she doesn't know that she's attractive. Continue to build her up positively leaving her wardrobe choice out of it. She's wearing the clothes she wears either to rebel or just because their comfortable. If you keep bringing it up, she's just going to keep wearing what she's wearing.
The lack of make-up is the same reasoning. Make-up enhances facial features. She most likely thinks there isn't anything to enhance.
I went through a baggy stage years ago myself and reacted the same way when my boyfriend approached me about it.