Runs oversided. Would be very baggy on an XS which is what the tag says. I am a Large (12) and tried to on and it was fitted on the sleeves and not tight on the belly area. So up to a size large could fit and everywhere in between. We are loving the simple style of our Allison Luxe Sweater, and you will too! With its v-neckline, semi-loose fit, long sleeves, ribbed hem and cuffs, and the seam down the middle, how can you resist? Our sweater is butter soft and easy to move around in. Model Info: Models are 5'7", Size 2, wearing smalls Fabric: 55% Cotton 45% Rayon