Old Navy black/red/pink floral shirt M could fit S

Sweet 3/4 sleeve top from old navy with semi sheer sleeve and small sheer panel above gorgeous black satin vneck . Torso panel is opaque. In very good condition , shipped fast from non smoking home Approx Measurements when taken flat - material has some stretch. Label marked M but in my opinion fits like a S or XS Waist -14.5” Shoulder to hem - 21” Sleeve - 16”