Vintage Kimono Robe

Beautiful Silky Kimono Robe. I do not have the belt. Robe does have loops. 3/4 sleeves. No material tags or size tags. I have looked over the whole robe and have found three places where the seam is coming loose. All seam issues are at shoulders and under arm and a smaller in size. Measurements: length~42” sleeve length~15.5” Robe closed armpit to armpit~20”. Would say it fits S/M.