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That's no more apparent than with one particular piece, the black maxi skirt

Ribbed Maxi Dress + Brown Suede Boots Style Notes: A black ribbed maxi dress is sleek and versatile, but pairing it with brown suede ankle boots adds a warm, casual touch

This is a reference to what has become known as the "Monty Hall problem:" if there are two goats and a prize behind three doors, the contestant has chosen a door, and one of the unchosen doors is opened to reveal a goat, should the contestant change his/her choice

Perhaps Grande is attempting to make her version of Glinda more similar to the Good Witch from The Wizard of Oz , which could explain the film's excessively pink wardrobe