From Final Fantasy XIII. Cosplayer is Queen Azshara.
Her original name being Claire Farron (Eclair Farron in the Japanese version), is the main protagonist of Final Fantasy XIII. She is the narrator and a temporary playable character in Final Fantasy XIII-2, and returns as the protagonist and sole permanently playable character in Lightning Returns: Final Fantasy XIII.
In Final Fantasy XIII, Lightning seeks to save her younger sister Serah, but becomes entangled in a plot that endangers her home of Cocoon. In Final Fantasy XIII-2, Lightning serves as a knight protecting the goddessEtro in Valhalla from her fated rival, Caius Ballad. In the concluding tale Lightning Returns: Final Fantasy XIII, Lightning is chosen to be a savior by the god Bhunivelze, tasked to save the people's souls before the end of the world. (finalfantasy.wikia.com)