Alison Blaire aka Dazzler from the X-Men. This is based off her appearance in the mid-2010s run by Bendis. Not a lot of appearances of this costume so there weren't many sources. The facial mark doesn't like to play nice but otherwise I don't think it's too bad for not having many images.
Triggers: ablairealt, two-tone hair, short hair, undercut, black hair, blue eyes, facial mark, short dress, torn clothes, belt, fingerless gloves