I wish more women would provide review information on how each brand fits, particulary new brands.  My order included both an XS and small since I don't always trust size charts.  At 5'4" and 110 lbs, I normally wear a size 2 or 4 in jackets (J Crew is definitely a size 2).  For this jacket I am keeping the small but with very little room for layering.  Both the bust and body fit are snug when buttoned, but just like the model....I will probably wear open most of the time. Being sweatshirt fabric, I feel this will be a versatile piece for me but I will have to hem the sleeves.