Women’s Embroidered V Neck Ruched Sleeve Blouse Size M/L?

Women’s Embroidered V Neck Ruched Sleeve Blouse Size M/L? . Missing brand and size tag. I’m assuming it is a size medium or large. I am between these two sizes and it fits me well. Smoke free home. See measurements. Pit to pit 18.5” Length 23.5” Waist laying flat 17.5” Arm length 10.5”