This is Lala Banderas from Black Joke manga by Rintaro Koike and Masayuki Taguchi. She only appeared in 3 chapters but enough materials for two outfit set. No colored art that I can find so feel free to be creative with skin/eyes/hair/outfit color.

Trigger words and basic look:

lala_black_joke, long hair, wavy hair, makeup, lipstick, toned body

Outfit:

black bikini top, leather pants, leather boots

flower pattern top, leather pants, leather belt, whale tail

Optional:

handgun, lower back butterfly tattoo

Style:

traditional media, monochrome

In my test the results are monochrome by default, so add "colored" in positive if you want that