Aerie stores are having a special shopping event on October 25th from 6 - 9pm. There will be giveaways, refreshments, and discounts. I have heard that the discount will 15% off. Some stores are giving out a free lip gloss to each person. Also there will be drawings for gift cards.
The email says to print the invitation but I am not sure if you need the printout. You can print the invitation here.
The promotions may vary from store to store so I would call and verify the details.