LULULEMON Swiftly Long Sleeve Crewneck Women's size XL. Could likely work just as well for a women’s large / 10. But using measurements, it’s likely an XL, size 12. Size tag removed - Please see the measurements that are included in the photos Measurements Laying Flat Pit to pit 20” Waist L to R 18.5” Hip L to R 20” Length 25”