Book of Flowers JSK by Kaneko (currently Pyshkin Pyshkin)

It's a first release: https://lolibrary.org/items/indie-kaneko-book-of-flowers-jsk

But you can also see more photos of the second release here https://pyshkinpyshkin.com/product/book-of-flowers-pinafore-dress/

Size 1:

Bust 78 - 94 cm, Waist 66 - 76 cm, Skirt length 65 cm

Full length is about 111 cm

Material

outer (70% cotton, 30% linen), cotton lace and lining

Notes

Detachable bow can be worn as a pin or hair clip. Dress can also be worn with or without a petticoat.

"This print includes illustrations from really existing 19th century botanical books on a vintage style paper sheets." - Kaneko's blog