Rosalina decided to help the Luma, and together, they fixed the space ship and set of to find Luma's mom.

But one day she found a shooting star which was actually a space ship with a Luma inside it. She was born in the Mushroom Kingdom and that is where she was raised as a child. A book in the Comet Observatory's library reveals her backstory. Rosalina first appeared in Super Mario Galaxy. Even so, she developed feelings of homesickness and melancholy, to the point of crying about losing her mother, though her spirits were raised easily when the Lumas impressed her with comets and an offer to take her back to her home planet. When Rosalina was young, she was portrayed as optimistic and proactive, helping a Luma build a spaceship to find the Luma's mother. Like most players, Rosalina enjoys special activities, but in a very humble manner. Since Mario Kart Wii, however, Rosalina has been portrayed as a little bit more upbeat and joyous than her original stoic portrayal, with examples being that Rosalina cheers and shouts louder, though still mostly keeping her introverted nature. Prior to Super Mario 3D World, her voice also has a reverberating effect. It has also been shown that Rosalina's voice is rather monotone, even when she is excited. Rosalina is a calm and reserved character, and often takes pauses when she explains how the universe works. Her outward strength and inner sorrow are likely due to the loss of her own mother. She has an intimate knowledge of the universe and cares deeply for the Lumas and her friends, where she assumes the role of the total caregiver and mother figure for them. Rosalina is a generally wise, kind, and a mature character. She wears a leotard swimsuit in Mario & Sonic at the Rio 2016 Olympic Games as well. The outfit is a pale turquoise dress with turquoise pantyhose and turquoise shoes also, it reveals that Rosalina floats. In Mario Tennis: Ultra Smash, Rosalina wears a sports outfit, just like Peach and Daisy. At the top of the motorbike outfit is a star drawn on it. She wears a white motorbike outfit with turquoise lines. But when players choose her and choose the bike, her attire changes, just like what happened to Peach and Daisy. When you pick her and the kart, her pale turquoise dress remains the same. Rosalina makes her Mario Kart debut in Mario Kart Wii. In Super Mario Galaxy, she holds a silver magic wand with yellow star at the top. At the bottom of her dress is bluish-white frill, which loops around and makes mountain shape at the bottom. She wears big golden earring which resembles a cross (x). Rosalina's eyes are cyan-blue, but her right eye cannot be seen as it's covered in her hair. The end of her sleeves are powder-blue, and her hair is shiny pale-cinnamon blonde, which is even more lighter blond than Peach's yellow blonde hair. She also has a yellow star brooch at the top of her pale turquoise dress, purple nail-polish, and silver heels. She wears a silver crown which resembles Peach's, though Peach has a golden crown. Rosalina's attire resembles Peach's, though both are different.

Rosalina daisy color palette swap