The midnight navy set is so comfy!! The waistband is elastic and stretchy, and the buttons are functional. The fabric content is 100% cotton. The model is wearing a size small. 

SIZING CHART:

• small
• top
• bust: 48"
• length: 25"
• bottoms
• waist: 28"
• length: 37"
• medium
• top
• bust: 50"
• length: 25"
• bottoms
• waist: 30"
• length: 37"
• large
• top
• bust: 52"
• length: 25"
• bottoms
• waist: 32"
• length: 37"