Aéropostale [1], known for its relaxed and inexpensive jeans, is having a Teens For Jeans [2] drive, which aids homelessness. Between Jan. 22 and Feb. 10, donate any of your gently worn jeans, and the company will give you 20 percent off a brand new pair. What's more, they will donate 10,000 pairs of jeans to homeless teens. Find a location nearest you [3].

Best of all? Watch adorable Rachel Bilson and Hayden Christensen [4] talk and giggle about the campaign. Second best of all, soon you'll be able to bid on celebrity jeans [5]! So dig through your denim drawer and donate to a worthy cause.