they even have a song that is the same "To be a princess"

It's not copied. It's based on it. It's a spin-off or shall I say rip-off.

I don't think so.

i think also not

I'm sure .

YES!!!

noooo
if u say that the princess and the popstar is coppied by the princess and the pauper u r wrong because the only thing is common in the two movie is that two friennds change thereself with each other but the story is not like that...and the end of the princess and the popstar is very different from princess and the pauper
so don't think that
the story is only based not copied the movie

I really think No,the plot is a bit different among these two movies.