Look at those eyes...staring into your soul..
I've been a 粉丝 of Rosalina since I was in kindergarten, and I know a lot about her. So when Mario Kart 8 came out, a new unlockable character was in the roster. This was Baby Rosalina of course, and I bet most 粉丝 would be excited that Rosalina finally has a baby version of herself. I, on the other hand, think that there is no way she could be related to, 或者 be the past Rosalina.
She can't be the past form of Rosalina, and here's my evidence. If you're a true 粉丝 of Rosalina, 你 would've played the game Super Mario Galaxy. Once 你 unlock the kitchen, 你 also unlock another room, The Library. In there, every time 你 defeat Bowser, Rosalina will read 你 a new chapter. This story she reads is none other then her backstory of how she got to be the Mother of the Stars. When she was about 8 years old, a Luma crashed into her yard, stating it was looking for its Mama. Rosalina looked into a telescope for months trying to find it's mother, with no hope. She then decided to fix Luma's 太空 ship and fly around. In the storybook, Rosalina's hair was 橙子, 橙色 and she didn't have a bang over her eye. She was also definetly NOT a baby when she got into space, so this proves Baby Rosalina is NOT Rosalina's past self.
Baby Rosalina also can't be Rosalina's offspring either, and Mario and Luigi Partners in Time proves it. As many of 你 know, Baby Bowser was indeed Bowser in the past, and Bowser Jr is Bowser's offspring. This means that the word "Baby" in front of a character's name shows that the character is for example, Mario from the past. The word "Junior" after a characters name means they're a character's offspring.
As I just proved in the 秒 paragraph, Baby Rosalina is not Rosalina's past self, and her name isn't Rosalina Jr, and if it was, that would mean she's Rosalina's offspring. So who 或者 WHAT is Baby Rosalina? A wannabe Rosalina? No. I, for some odd reason, think she's an evil robot created 由 Bowser to spy on Mario! Weird, right? Let me know what 你 think!