When it comes to rewards, Aerie gives the best of the best to its rewards members. Signing up to become a rewards member is free! When you sign up, you get an exclusive 15% off Aerie promo code on your birthday! On top of that, you can also score free jeans and bras when you purchase five of either item. Even better, for every dollar you spend at Aerie or American Eagle Outfitters, you get 10 points. Once you point total adds up to 2500, you will get a free $10 reward you can use for either online or in-store shopping.