http://shop.nordstrom.com/s/the-tie-bar-dot-silk-tie/4180220?origin=category-personalizedsort&fashioncolor=RED
Even the Hogwarts girls have to wear the ties!
https://www.landsend.com/products/girls-zip-front-drifter-cardigan/id_253818?sku_0=::CLN
As much robe-like as I could find in girl's sizes and the color black.