viva you Tiered Dress Size is listed as 2. It seems to correspond to a size M, so I've labeled it as M. It has a side zipper. The ribbon is just tied on and can be removed. The tiered ruffles and sheer look are very cute. It's also cute to wear a T-shirt over it or to combine it with a top underneath for a more casual look. Please understand that this is a used item.