Perhaps you are thinking of Glimmer, a tribute from District 1 in The Hunger Games.
Glimmer is described as:
* Beautiful: She is portrayed as being extremely attractive, with long, dark hair and piercing blue eyes.
* Vain and superficial: Glimmer is known for her obsession with her appearance and her focus on trivial matters.
* Skilled in hand-to-hand combat: She is a strong and agile fighter, likely trained in the Capitol's combat programs.
* Stylishly dressed: Glimmer often wears elaborate and revealing outfits, reflecting the Capitol's penchant for excess.
If you are thinking of a different character, please provide more details!