Words fail me. Isn’t that the sweater she wore with the white tank top and 50’s circle skirt when she met the Queen? Looks like she added a bicycle tire shined up with Armor All to spruce it up.
Oh, gosh, you're right! I thought the black part was (rather unusual, but not bad) single piece with the white blouse, but it's that same dumb sweater that would be too small for my 5th-grader.
Studded snow tire for a bicycle.