True to size, I am an 8/10 wearing a medium.  Luxeknit collared sweatshirt top and matching pants. Extremely soft, buttery knit fabric. 55% rayon, 40% polyester, 5% spandex. High waisted, elastic waistband pants with drawstring. Sold as set. 

Small 4-6
Medium 8-10
Large 12-14