At the end of Through the Looking-Glass, Alice becomes a queen on the chessboard.
Carroll structures the novel as a chess game, with Alice beginning as a white pawn. Each stage of her journey represents progress across the board, and the Red Queen explains that reaching the eighth rank will allow her to become a queen. Alice eventually crosses the final brook and is crowned, fulfilling that condition.
The transformation is both a plot event and a symbol of Alice’s growing independence. Although she gains the formal status of a queen, the following feast is chaotic, and the Red Queen and White Queen continue to overwhelm her with riddles and strange rules. This keeps the promotion from feeling like a conventional reward.
A common mix-up is confusing Alice’s promotion with the White Queen, who is already a queen and later appears as a sheep. Alice’s new chess role is queen, not king, knight, or pawn.