Just assuming. This is a button-up blouse with a classic fit, short sleeves and a collar. It’s made from Effortless Satin™ — drapey, lightweight Japanese satin with a glossy look and feel. Features Buttons made with recycled materials Materials & Care Origin: Fabric from Japan Content: 100% polyester Care: Machine wash Imported Fit: Classic — Follows your contours with a little room Length: Waist — Intended to hit around the waist A size XS will fit someone who typically wears a 0 in other Aritzia clothing. Depending on body shape and fit preference, a XS may also fit someone who wears a 00 or 2. BUST 32 IN — 33 IN WAIST 24 IN — 25 IN