What is the true reading order for The Chronicles of Narnia?

You can read it in different orders, it doesn't make a difference.

1. order (Published)

1.The lion, the witch and the wardrobe

2.Prince Caspian

3.The voyage of the Dawn Treader

4.The silver chair

5.The horse and his boy

6.The magicians nephew

7.The last battle

2. order (Chronological)

1.The magicians nephew

2.The lion, the witch and the wardrobe

3.The horse and his boy

4.Prince Caspian

5.The voyage of the Dawn Treader

6.The silver chair

7.The last battle