I like an oversized sweater as much as the next girl, so, based on other reviews I ordered a medium (5’3, 137, athletic build). I love the sweater, it so soft and cozy. I'm so glad I did! It is perfect to throw on over leggings. Soft and comfy. perfect for a night in watching christmas movies. I ordered a few more in different colors in the medium size to see how they fit. This definitely will be a go to, when it gets colder.