She is looking intensely with her blue eyes.
May I make a suggestion? Such a small top would immediately slip down in a fight. Even if the seam of the shirt were glued to the skin (female Hollywood stars do this with the revealing dresses on Oscar night), sweat would loosen the glue. Maybe she started out wearing a tank top and one strap ripped or was cut through the fight. If you drew it like this, reality would be more involved and you would still have a tightly dressed dangerous beauty showing a lot of skin.
Edit: Or is it this thin material out of Kautschuk? (Sorry, I don't know the word in english and the google translator is no help for this kind of words.) This kind of clothing, that you need powder to squeeze into may not slip when fighting.