Is peach and daisy and rosalina sisters?

Peach, Daisy, and Rosalina are not sisters; they are distinct characters in the Mario franchise. Princess Peach is the ruler of the Mushroom Kingdom, Daisy is the princess of Sarasaland, and Rosalina is the guardian of the cosmos. While they share a friendship and often appear together in games, their familial relationships are not established in the series. Each character has her own unique backstory and role within the Mario universe.