70s Floral thick knit poly Long Sleeve Dress Large

Smooth poly knit from "Channel 1 by Bill Sims." Tag reads 18 1/2 but bust is only 38" on a flat lay, with outgoing seams it may hold up to 40" which makes it more like a modern 10/12! Button front, long sleeves. Waist: 36" Length: 39" Sleeves mid pit out on a flat lay: 20" [Sred]