Thursday is Red Cup Day at Starbucks, one of the most anticipated days of the year for Starbucks fanatics. The coffee chain rewards customers who order select holiday beverages with a free limited-edition red holiday cup.

If you're able to get your hands around it, the red cup also comes with its own Starbucks perks. When you bring the cup back to your local Starbucks store during your next visit, your barista can make your order in the reusable cup—and you’ll receive a 10 cent discount while prioritizing sustainability.

"Red Cup Day," a favorite Starbucks holiday tradition that offers customers free reusable cups, takes place this week -- but there's a catch.