This is a vintage jacket with some wear to underarm lining as shown, size on tag 42. Size as shown in photos laid flat pit to pit 36" length 21" I would say a size 8/10 but please see measurement's.
This item is in the category "Clothes, Shoes & Accessories\Women\Women's Clothing\Coats, Jackets & Waistcoats". The seller is "sugareena" and is located in this country: GB.