Vintage BP by Nordstrom Black Linen Button Up Collard Dress

I wish I could keep this one 🥲 Great condition - slight discoloration on material in armpit area (please see pictures). Unnoticable when worn. BP by Nordstrom Listed as size 5, fits like a 4. Material has no stretch. Outer material: 55% linen - 45% rayon Inner lining: 100% acetate Measurements: Length: 48 inches Bust: 16 inches Hips: 19 inches