Celebrating the release of the thirty-fourth volume of the Boku no Hero Academia manga , author Kohei Horikoshi posted a special illustration on his social media of the invisible girl.

Kirishima and the girl Tooru Hagakure, known as the invisible girl from Boku No Hero, star in the visuals. After the reveal of her face in chapter 337, we now see the "heroine's" full design, although we still can't identify her actual hair color.
Synopsis:
"My Hero Academia tells the story of Midoriya, a young man born without a Quirk (power) in a world where 80% of the population has manifested at least one since childhood. The young man's dream of becoming a hero, inspired by the No. 1 hero, All Might, is crushed by this discovery, but…"
Finally, what did you think of the Invisible Girl's design? Leave your comment on the subject!
Source: Twitter