This fall movie might be hitting theaters after Halloween, but I am already planning how to incorporate this into my Halloweekend. The colors! The textures! The theatre kid of it all! I simply cannot get over how gorgeous Ariana Grande's Glinda and Cynthia Erivo look in their gowns. If you don't want to go over-the-top, this BFF costume just requires an LBD and a pink mini.