1. First, you need to find the Tillys coupon code you are interested in on this page and click Get Code on the right side of the title.
2. With a single click, you'll subsequently witness the offer code being shown and automatically copied to your clipboard.
3. Following this, you'll be required to go back to the checkout page of tillys.com, spot the promotional code box, and input the code you copied earlier.
4. In the end, you have to click 'Apply Code' to determine the discount you've received on your current order.