Vintage 1960s Plaid Maternity Set Top Open Belly Pencil Skirt Expectantly Yours

Red plaid maternity set from the 60s that includes a matching top and pencil skirt. The top has 3 big decorative buttons. It does open up a little but secures with a tiny hidden button and snap. (fwiw it does not open up enough to nurse) The skirt has a belly hole with attached ties. The fabric does have a little bit of stretch.  Brand - Expectantly Yours Content - 55% Cotton 45% Rayon Size - Labeled Size 13-14, I think it's approximately a modern size Medium but I'm not 100% sure so please check the measurements to ensure fit TOP: Shoulders - 15" across Chest - 19.75" pit to pit  Length - 23.5" Sleeves - 13.75" from shoulder seam SKIRT: Waist - 19" across back Hips - approximately 22" across, stretches to approx 23.5" Length - 24"  Condition - There is a little hidden button and loop under the large buttons and the loop is kind of worn out. This doesn't show.