This blouse is worked top down with a higher neck.
I have tried it in different yarns. For a hot summerday a fingering bamboo from www.rito.dk. It runs 185 m on 50 grams, but you choose any kind of fingering.
I have also tried exquisite 4 ply - in Denmark you can buy it from www.uldtotten.com
I just found this amazing yarn https://oliventwoewe.com/collections/woolf/products/sunfl...
Perfect for the blouse.
For the blue/White I have used Linus2 and jasper silk from www.magiskegarner.dk