I saw this top online and read the reviews that it was running small. i am normally an xxs in most retailer clothing. i am 5'6 110 for reference. found it in the store and took both the xs and small in to try on. the reviewers were right! i tried the xs on first and it was quite snug and short. the small fit perfectly. it was a bit longer too. great style and soft fabric. once you size up, you'll love it...