"Yuna (ユウナ, Yūna) is a fictional summoner in the Final Fantasy series. She is the female protagonist of Final Fantasy X and the main protagonist of the sequel Final Fantasy X-2. She was designed by Tetsuya Nomura, and voiced by Hedy Burress and Mayuko Aoki in the English and Japanese versions, respectively. She has received mixed reactions for her role in both Final Fantasy X and X-2.
She ranked 10th on IGN's top 25 Final Fantasy characters list. After appearing in a conservative, long dress in Final Fantasy X, the designers changed her outfit to a more revealing one to reflect the more carefree world of Final Fantasy X-2. This was met with both praise and criticism."
Source: Wikipedia, "Yuna_(Final_Fantasy)", available under the CC-BY-SA License.