This is a navy and cream plaid wool coat or dress by Givenchy, from the 1980's. The coat dress is double breasted with a fitted waist, pleats at the hip, navy blue silk lining, and side seam pockets.
Measures:
Length: 44"
Sleeve: 23 1/2"
Shoulder to Shoulder: 16"
Bust: 38"
Waist: 28" Hip: 44"