NEW Chaus Woman Size 20 100% Silk Duck Egg Blue Check Blazer Jacket. jacket is on a size 14 mannequin. labelled size 16 which I believe is an American size. suitable for uk size 20. please check measurements given below with your own before purchase. underarm 49" Waist 45" length 31" 100% silk with 100% acetate lining. no stretch in fabric. padded shoulders. concealed front pockets.