Normally wear a medium but that size was sold out so I bought a large. Everything fit perfectly except for the neck, as the hole was so so small I could just barely squeeze it over my (small to average size? lol) head. Once finally on, I adjusted the turtleneck every which way but it was still uncomfortably tight around my neck and I don't mind turtlenecks normally. In fact, I love them! This particular one at least just ran way too small in the neck. Shame as the rest of the garment was very nice, but Im going to have to return it. Im pretty disappointed as I LOVE cable knit sweaters and cozy turtlenecks but now live in Arizona and was excited to find a top that had those features I love but in a style I could actually wear more than one day a year in this weather. Alas, Ill keep looking. Only taking off one star because the neck hole was the only issue with an otherwise gorgeous top.