From http://shop.tillyandthebuttons.com/:
"MAKE A BEAUTIFUL BUTTON-BACK BLOUSE!
Take your sewing skills to the next level by making Mathilde. The elegant blouse features tucks down the front bodice, flowing sleeves and an adorable button-back opening. Suitable for improvers, you'll learn to create all these features plus French seams so you can make the inside as beautiful as the outside. The user-friendly instructions guide you through with a jargon buster, clearly labelled pattern pieces, and photos of each step.
Tuck Mathilde into a pencil skirt or wear loose over skinny jeans. Try inserting piping into the yoke seam, or sew on contrast colour buttons to create a surprise when you turn around."