What would you call this style?

Ghiblicore

Mosspunk. Or perhaps Elfcore.

Gnomecore

Moomincore

Peasantry

Clothing

Dark cottage core?

Looks like a variant of Mori Kei

Berries and Cream

Regardless of what anyone says here, this shit simply looks like what a typical poor lower income girl in the Southern U.S. wears, because all they can afford is to shop at an antique/thrift store purchasing a recently dead grandmothers wardrobe.

Floral Cottagecore or Mori Kei

I would say Mori Kei

Dollcore

Boutique.