Note: You must first have enough money to pay for the desired item. Buy the 
item, then equip it.
Go back to your crib, then press Start and exit but do not save. Then, go 
back to Build A Label
mode and continue your story. You will still be wearing the item you just 
bought, but will have
your money back. If you change it, you will lose the item; however, you can 
repeat the trick as
many times as desired.