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Runs very small. I normally wear a large and got a 1X and its still tight. It's a little shorter than I would like, but its slimming and a pretty color. I got the teal color. Sort of a dupe for lululemon, but WAY cheaper! Its flattering, and great for getting to the gym and back. I have to take it off mid-workout because I get hot, but once it's warm enough outside to go running I'll wear it for that. Read the size chart and you will get the right size.