Blue jeans may have originally been designed for cowboys to wear while wrangling steer at the rodeo, but today just about everyone wears denim. Including toddlers. And teachers. And even The Duchess of Cambridge. So whether you consider yourself a fashionista or fashion-clueless, chances are you have an extra pair of jeans (or 5) taking up space in your dresser drawer.

Luckily, the people at DoSomething.org have figured out a way to help you clean out your closest while doing some serious good. They’ve teamed up with Aeropostale for the seventh annual Teens for Jeans campaign – an project that enables people all across the country to donate their gently used denim to benefit teenagers who are homeless. Turns out, there are 1.7 million teenagers living without a home in America. And the number one item they request in shelters is – you guessed it – jeans.

Here’s how you can help make a difference: Now through February 10, drop off your extra blue jeans (make sure they are in good condition – clean and free of rips or holes, unless they’re styled to be that way!) to any Aeropostale store. You’ll be doing something good – and as thanks for your donation, Aeropostale will give you a coupon for 25% off a new pair of jeans for every pair you donate.

Feeling extra motivated? Organize a blue jean drive at your high school, college, synagogue or community center and encourage other students and friends to join you in donating their denim. The school or organization that collects the most pairs of jeans will win a whopping $10,000!

Are you involved with Teens for Jeans? Tell us about it in the comments below or by tweeting us at @repairtheworld.