Alexander Del RossaWomens Fluffy Robe, Fuzzy Robe for Women, Long Hooded Plush Robes for Women, Plus Size Robe

I want to buy this for a someone that's 5'10, and over 300 lbs, size 24/26 in pants, but smaller, about 20/22 in tops. what size should I buy her?

Does it cover your ankles

My wife is 5' 4", weighs about 150. Can you reccomened a size

Are the colors true? The purple looks black.