Which princess does Brie Larson voice in The Super Mario Galaxy Movie?

Brie Larson voices Princess Rosalina in The Super Mario Galaxy Movie. Rosalina is portrayed as a princess from outer space, the adoptive mother of the Lumas, and a central figure in the film's cosmic adventure.

Rosalina originated in Nintendo's Super Mario Galaxy, released for the Wii in 2007. In the games, she watches over the Lumas from the Comet Observatory and helps guide Mario through the galaxies. Her distinctive blue dress, crown, wand, and association with stars made her one of the most recognizable newer characters in the Mario series.

The film also gives Rosalina a family connection to Princess Peach, presenting Peach as her long-lost younger sister. That relationship is specific to the movie's story and should not be confused with Princess Peach, Princess Daisy, or Pauline. Larson's casting therefore does not mean she voices Peach; Anya Taylor-Joy continues to voice Peach in the animated film series.