NWT Banana Republic Denim Swing Style Dress, Color: Blue, Size: 16, Adjustable spaghetti straps, side zip closure, and the upper back of the dress is elastic for a little bit more stretch. This denim dress is adorable! It hurts my ego that I grew out it before I even had a chance to wear it, but it’s good quality. Try it with a cardigan, duster, and or shrug. I can post more pics if necessary.