You can find the size chart here.
Fit: Robin is 177 cm tall and wears Ella in S
Description: Ella our definite highlight of the 2nd season. Due to the refined cut and the popping of the waist, Ella flatters every figure. 
Our flowing bamboo is pleasantly light and wears silky on the skin, breathable and ideal moisture regulating. Bamboo is also particularly suitable for people with very sensitive skin or prone to allergies.
Material: 92% Bamboo 8% Spandex.
Care instructions: 30° gentle wash and Shirts & Tops, Allergies, One Shoulder Blouse, Sensitive Skin, Armoire, Open Shoulder Tops, Outfit Ideas, Portugal, Jumpsuit