In general, I would say the tops run very true to size. They also claim that that the shorts run a tad small compared with other brands and include a detailed size chart. In my experience, they don't run that small as I wear the same size in SFQ shorts as I do in other brands but maybe if you were on the cusp it would make more of a difference. Michele, Lauren, and Hill are terrific and if you call, they they will kindly walk your through your size selections. And just to note, the capris run a bit big. I wear a medium in all other pieces but my capris are small.