“Seems to run big”

“I'm 5'4" and a size 8 (but with narrow shoulders) so I originally ordered a medium, but I was swimming in it. The sleeves were WAY too long and it just kind of hung awkwardly. I exchanged it for a small and it now fits perfectly! There's enough room for a fleece layer but it now looks more fitted. However, my 5'0" sister (size 10) also ordered a medium and she likes the way it fits. So I guess if you're borderline on the sizes, order down if you prefer it more fitted (or have a petite frame). As for the jacket itself, it is incredibly lightweight and really comfortable. It moves really well. I love it and would buy it again.”