In God of War: Ascension on the PS3, there are several unlockable costumes that you can use to style Kratos with various different outfits.
Here are the available costumes, and how to get them.
Check out all of the other God of War: Ascension DLC on Ebay if you missed your chance to pre-order the game.
All of these costumes are usable in single player. You'll be able to use them after you beat the game in a New Game+.