YOU SAID:
I'm the number one princess in the world
INTO JAPANESE
私は世界でナンバーワンの王女です
BACK INTO ENGLISH
I am the number one of the princess in the world
INTO JAPANESE
私は世界で王女のナンバーワンです
BACK INTO ENGLISH
I am the number one of the princess in the world
You've done this before, haven't you.