I took this Fleece lined Barbour vest in US 6 / UK10. It's a slim fit and I tried US 4 / UK 8 before but it was snug when fully zipped so I sized up yet again so that I can layer comfortably underneath. The waist has button tabs so that you can button it for a figure flattering fit. I took the striped tee in size XS and the leggings in girl's size 13.LTKGiftGuide LTKunder100 LTKSeasonal