Aquascutum of London Aqua 5 classic single breasted long trench coat medium

Suppose to be size M. I bought this for myself but it ended up being too small. I think it would be good for size 2 or bit oversize for size 0. Measurements: flat lay approximate when buttoned up, shoulder seam to shoulder seam 15 inches, pit to pit 20 inches, shoulder to hem 42 to 43 inches.sleeve= 58 cm Condition: very good pre loved condition. Does not come with belt but the loops are present. The loops are very minimalist as I understand this design was mostly made to be worn unbelted. The only flaw I could detect are some small stains near the right side of the back vent close to the hem shown in the photos, very minor and might come out with simple washing.