Black velvet hat with…
Black velvet hat with little silver skulls and a black veil-like train: acquired. Purple corset, still fits the-body-post-two-children, if I get a longer black ribbon, which is totally within my power. Black skirt: already own. Just need some stripey purple-black socks, a black shirt, and black shoes, and my costume will be complete! Kavya says it doesn't count as a witch costume because the hat isn't pointy, but I say pfui on that! (I fell in love with the hat.)
You need to show her the Harry Potter movies to prove that witches and wizards wear all kinds of head gear.