Gorgeous fit!! I did ordered a size up. Reason being I really didn't want to pin anything to close gap in chest. This dress is a beauty!! You will not regret it. You don't even need a slip under. Slight wrinkles not much but I will just steam iron. The fabric is not thick that you can't sit and it's not thin that you worry about see thru. Perfect 3/4 sleeves. Neckline is beautifully made, with hair up or down, it's beautiful. The sash that comes with I didn't put it on but I did like my own belt. You can really dress it up however you like.  I ordered 3XL in black. I'm usually a 14 petite on dress, this is the perfect length for my liking. I'm 5'4.