UPDATE: ASOS has discontinued their loyalty program and birthday discount
ASOS offers an exclusive birthday discount to customers who sign up for their ASOS A-LIST loyalty program. Members receive a special birthday promo code via email during their birthday month, which provides a discount on a single purchase made on the ASOS website. This allows customers to celebrate their special day with a stylish treat from ASOS’s vast selection of fashionable clothing, accessories, and beauty products. To be eligible for the birthday discount, customers must join the ASOS A-LIST and provide their birthdate during registration. With this exclusive deal, ASOS adds a fashionable touch to customers’ birthday celebrations.
ASOS has discontinued the loyalty program its birthday discount ran through, so there is nothing here left to sign up for. Zara is in the same position and is typed that way on this site. H&M still runs a birthday reward through its free loyalty tier, and Urban Planet discounts across your birth month, so both are better places to start.