This is a good, basic, light jacket and what I was going for. My body measurements are:
54, 135lbs
Shoulders: 14.5 across
Bust: 32 (B cup on a good day)
Waist: 26.5
Hip: 35/ 40 at butt

I ordered the medium and it fits comfortably loose, I think I couldve gotten away with ordering the small for a more snug and fitted appearance. It has looooooong ties but you could easily trim and tie them to a shorter length. Material is fairly soft with some stretch, I can pull the sleeves over my knuckles. Overall, no complaints so far. If it holds up well I will definitely consider buying more!

I snapped some quick pictures for reference. Its a bit wrinkly from the packaging, nothing a wash or stint in the dryer wouldnt fix :)