If you have 10,000 Meseta on your character when you quit a game, you can access the Dressing Room feature.
To do so, just enter Offline/Online Mode. Get a hold of 10,000 Meseta and make your character hold them, so you can't have it in the Deposit Box. Exit the game by quiting.
Now when you go to select your character where you would normally get the options ''Comfirm, Recreate, or Cancel'' you should now see ''Dressing Room.''
Remember this costs 10,000 Meseta, and if you select Dressing Room and ''OK'' you will be deducted those Meseta. The features in the Dressing Room are limited only to changing Hair Style, Hair Color, and Clothing. Not something big, but after playing a certain number of hours with the same clothing, you can add change.