Vintage 50s / 60s Beeline Fashions Belted Sleeveless High Neck Knee Length Dress

Vintage 50s / 60s Beeline Fashions Belted Sleeveless High Neck Knee Length Dress. I believe this is from the 1950s but could be from early 1960s. The tag is very worn with no size visible. Today the measurements would probably be equivalent to an XS or S. Since clothes ran smaller back then it could have been a M or L but I have no idea. Material and care instructions are also not present or not visible. Material on round belt is starting to rub off a bit on the side with worst area shown in photo. Photos are taken with belt clipped up since I don’t have a mannequin with a waist and hips to keep it up. It could be safety pinned if you are wanting to keep it supported when wearing. Chest is approximately 33 inches (16.5 inches pit to pit). Waist is approximately 26-27 inches at belt. Length is approximately 32.5 inches from shoulder to hem.