I thought this might turn out to be Dior, given that Dakota wears that line a fair bit, because it’s so evocative of the one Emma Watson wore to the Golden Globes in 2014. But no, it’s apparently just a less-adept copycat. At least Emma’s Dior looked expensive, and hung correctly, and had that bright red-orange color working in its favor. This looks like a coat Dakota made at JoAnn’s Fabrics one afternoon, then put on backward to cover a malfunction.
That, or a discount chair cover someone rented for a wedding. You can practically smell the Clorox.