To get the Tory Burch birthday discount, customers must first sign up for the Tory Burch Rewards program. Once enrolled, customers will receive a special birthday offer each year on their birthday. This offer is typically a percentage off their purchase or a free gift with purchase. Customers can take advantage of this offer by entering their unique promo code at checkout. Customers must also ensure that their birthday is accurately entered in their profile in order to receive the offer.