While hiding from Seattle’s rainy grayness yesterday, I happened upon an interesting window display at teeny-bop-shop Aéropostale. In bright green letters, the sign urged passersby to recycle their denim as part of the store’s Teens for Jeans campaign.

The project aims to give gently used jeans to homeless teens across the country — and Aéropostale customers who donate a pair get 20 percent off a new pair in return. Unfortunately, yesterday was the last day of the campaign, but I did talk to a sales associate who said that the chain was planning to repeat the project annually.

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I love this "take back" idea and wish, of course, that everyone did it — and year-round, too. But maybe during the weeks this window display ran, it got people thinking about what happens when they decide a pair of jeans isn’t stylish anymore or doesn’t fit right. They certainly do no one good in a landfill somewhere.

Below, check out a cute PSA for Teens for Jeans with Rachel Bilson and Hayden Christensen:

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