Vtg Astor One XL Blue Trench Coat Women's Long Length Single Breasted Sz 18

Vtg Astor One Sz 18 Blue Trench Coat Women's XL Long Length Single Breasted Good pre-owned condition. Very elegant and classic. Long length jacket. Vintage. Not too heavy. Suitable for spring and fall weather, or winter weather if layered underneath. Size 18. Measurements included in the pictures. HOWEVER, I think it would be too small for an 18 today, pit to pit measures 23 inches, would best fit Large or X-Large. Please confirm measurements before purchasing.