Kate Spade denim chambray floral embroidered snap button shirt - M/L?

Kate Spade denim chambray floral embroidered snap button shirt no size tag - see measurements - guessing M / L pit to pit: 19" shoulder to hem: 25.5" excellent condition - appears to be new without tags, but I cannot be sure so I listed as pre-owned. the only issue is that there is no size tag, and the kate spade tag has been crossed through with a marker (did not go through fabric, so nothing shows on back) o773