OZMA Charlotte Dress flexible sizing S

From OZMA site: The Charlotte Dress is an easily adaptable, dress-up-or-down staple. Full long sleeves, button-front, with a softly gathered waist and full skirt. Designed in subtly patterned Japanese yarn dyed organic cotton, with the most beautiful drape and soft structure. Worn once. Note: runs large. This size XS/S fits me like M/L size 10. Can also fit a smaller size with an oversized fit. Super comfortable and lightweight.