New retro sewing pattern Butterick 6212 is a super cute 1950's style popover, or pullover dress pattern destined to become a popular model this summer. It has great details in the shaped sweetheart neckline, midriff waistband and double buttons in the skirt back, with an optional back waist tie. These photos show the how the actual garment looks on a model. At this point, small details are more clearly seen. This pullover style is really a multi-fit house dress, with a mock blouse attached…