This is a LoRA trained on a dataset generated using Midjourney and its "sref/moodboard" style capabilities. A typical original prompt:

A young woman with very long, straight purple hair and bright yellow eyes stands solo, looking at the viewer. She wears a sleeveless grey sundress adorned with a blue ribbon and a large bow at the collarbone. On her head, she has a straw sun hat decorated with a purple bow and a yellow flower. In her hands, she holds a bouquet of sunflowers, adding a cheerful touch to her outfit. At the background is a wall of sunflowers of a sunflower field --profile ms32mfv --stylize 1000 --niji 6