Holiday shopping is in full swing, and there are certainly great deals to be found everywhere this year. However, you can save even more money if you shop for those deals with the right rewards credit cards in hand. In fact, in some instances you can even receive an additional 25% in discounts! So before you hit the shops this year, make sure you know what discounts and rewards are offered by the credit cards you already carry in your wallet. Or, consider applying for a new rewards credit card to maximize your holiday savings. Here are some of our favorites if you're already on the hunt: