Butterick 5456.  1940s; Overblouse with a Flared Peplum. (A) Dressmaker-type overblouse that makes a smart ensemble when teamed with skirts. Stand-up collar frames a plunging neckline; perky peplum flares from the waist; long deeper-armhole sleeves. (B) Collarless; cap sleeves
RARE!! size 20, bust 38