1970s Olga half slip, 6 gores, A-line, neutral, marked M but fits like S

Vintage 70s nylon knit half slip. Six sections, good for wearing under A-line or full skirts. Made in USA. Marked vintage size M, but fits like a modern size S. The mannequin has 26” waist and 36” hips. Waist flat measure unstretched 12 1/4” (total 24 1/2”) Waist flat measure stretches to 15” (total 30”) Center front length 24 1/4” Very good vintage condition. No holes, tears, stains, or runs. From a smoke free and pet free home. Neutral, minimalist