Living in Los Angeles and Honolulu I'm always looking for tops that art suitable in both climates.  I was very careful to read the reviews on these shirts, as often times garments made overseas have different sizing.  I'm 5'3" 160lbs and I ordered LARGE and it fit beautifully.  I don't care for baggy clothing and I am very happy I DID NOT SIZE UP.  The tops (I ordered 5 different colors) are flattering and form fitting.  Love that there are so many colors to choose from.  I'll be ordering more very soon...