Size tag is missing but this is likely a M. See measurements Materials tag is also missing but it seems like a rayon/poly fabric. Beautiful design and cool color combo as is always the case with Anna SUI! So lightweight and feminine! Ruffles and bell sleeves and smocking at waist. Flouncy flouncy! Waist: 14.5” flat (although the waist is gathered and stretches another 6 inches) Pit to pit = 18” Length- 27” Sleeve length: 20”