Vintage Duly Mode Plaid Double Breast Style Removeable Lace Collar Suit Dress M?

Vintage Duly Mode Plaid Double Breast Style Removeable Lace Collar Suit Dress M? Good vintage condition, couple on tiny thread pulls, few stains on inside lining and removeable collar has a little fraying, overall very cool colorful plaid, lace collar can be worn or removed, shoulder pads, double breasted style suit dress, unsure of material or size, estimate a M or maybe L, so please see photos and measurements below Dress form in photos is a medium form with a bust of 34.5" Approximate measurements while laying flat Armpit to armpit - 20.5" Length - 40.5"