Without product to style her mane, she decided to braid it for the sake of saying she put effort into it. Her dark purple hair cascaded over her neck and shoulder, a red bow adorned near the base of her tail; which she brushed thoroughly and left unstyled, hoping it'll cover her shame.  Rarity didn't want to give Atchmon the wrong impression. If she left her sex exposed, it would've sent a strong signal of what she was after. 