Size: M (one size) 
Only tried on once
It's made of textured cotton, that's why it wrinkles very easily and why it's so wrinkly, my apologies... If you'd like, I can send it to the dry cleaners before I ship, but it might wrinkle again. 
Questions about the item are welcome 🖤
Measurements, from the official website: 
Length: 115
Neck circumference: 40
Shoulder width: 46 (drop shoulder)
Bust: ~120 (elastic)
Sleeve length: 36
Cuff: 22~ (elastic)
Hem circumference: Ruffle hem 530
Waist: ~63~120 (elastic)