i dont know i asked the same question
If you have Super Mario Galaxy, you'll get a message about a "gift," which is Rosalina.
You can't. but you can unlock Rosalina that close enough To the SM1
the only character that you could unlock by playing super Mario galaxy 1 is rosalina because she was only in super Mario galaxy 1 and now 2
She is in Super Mario Galaxy 2. At the end of Grandmaster Galaxy-World S;there is Rosalina.
.Get at least a 1 star rank on all mirror cups and you will unlock her.ORCreate a profile in Super Mario Galaxy.
To unlock Rosalina the easiest way is to have save data of Super Mario Galaxy and race 50 times.
Here is a cheat just for you... If you have a super Mario galaxy file, you automatically unlock Rosalina for play in Mario kart!
You have to have Super Mario Galaxy saved onto the system. It might take a little bit, but you will unlock her... I have.
No she is not, but she is in Super Mario Galaxy and Mario Kart Wii.
The "star" that floats next to Rosalina is called a 'Luma' the Lumas are from Super Mario Galaxy. And Super Mario Galaxy
she owns the hub.
I think you can because if you can get her on Super Mario Galaxy 1 than you can get her on Super Mario Galaxy 2. Hope this helped :)