how to get Luigi

Go up the stairs and go into the door on the right wall, jump onto the raised platform, open up the ? Box with mario and get the flower, then float to the roof and you will see a door. Big boo is up here, and so is luigi's level

First go up the stares if you didn't do first star missin triple jump.Enter the door to the right see the floating box hit if it's solid if not solid doable jump or wall kick go throu the door.You should see a Luigi painting jump in it.You will be in the marry go room and hear king boo's laph listen to it go throu the right and you advass.If go throo the door or in hole you'll end up fisrt room of the maze.When you get past the maze you'll be in a room with a huge mirrer go infisrt persen and you can do the rest

I ment wrong door or fall in hole