This style is Core Collection.

A beautiful, silk crepe de chine shirt. Cut with lovely details on the sleeves and a high mandarin collar, with gently gathered front. The quality of the silk crepe is exquisite and easy to travel with and care for. Wear it with any high waisted item from your wardrobe or with any pants or skirts from our collection for relaxed evening wear.
 

Danish sizing. Fits slightly small, size up if in between sizes. Model is wearing size 36. Made with care in Europe.