Ellen Tracy wool blend blazer - marked size 4 but fits like 8/10!

Beautiful retro design (1950’s?) Ellen Tracy blazer in brown with floral lining. No tags but pockets and back slit still sewn shut. Extra details really make this jacket - ruffled cuffs, fabric covered buttons. 3 button closure . Slight flare in back gives it a super feminine fit. The only issue with the blazer is that it is marked size 4! It is really closer to size 8 or 10. Approximate dimensions are: Shoulder to shoulder 14.5” Pit to pit 18” Length 26” Waist 34” Please feel free to ask questions- especially about size!