Vintage 1970s women’s button down Maternity dress, seersucker, plaid, duster

This is an amazing, rare (have not been able to find another listing like it)! From my research it looks to be made in the 1970s, Bobbie Gee of California is the brand and was originally a maternity gown. It buttons all the way down so it could be worn as a floor length duster, cardigan etc. it is one of a kind! It great condition, the fabric has no holes or stains. I did have to reinforce one of the buttons by hand sewing. And for some Reason, there are not button holes of the left sleeve cuff. Does not have a size tag but I would say a L/XL. Measurements are: Pit to pit 24.5 inches Total length, 50inches . . . . . . Maxi, dress, country, western boho grandma cottagecore rustic hippie