J. Crew downtown field jacket XS

Measurements from j. Crew, this is a great jacket, color is more of a dark olive green, waxed canvas fabric. Great gold hardware and metal zipper. I was gifted this jacket but need a bigger size, I'm usually a S-M, and I just can't squeeze into this. Need to sell, so I can buy in another size. Boxy fit. Body length: 25". Sleeve length: 33 1/8". Hits at hip. Model is 5'11 wearing a size small