Did you know that one third of all homeless people are under the age of 18? DoSomething.org and Aeropostale are encouraging more fortunate teens to help their peers. Together, they have teamed up to create “Teens for Jeans”, a campaign that helps young people donate their gently used jeans to homeless teens across the country. Celebrities like Rachel Bilson, Chad Michael Murrary, Hayden Christensen, Hilarie Burton and more have come together to sign used pairs of jeans to donate to homeless teens. Watch Rachel’s PSA and learn more about the campaign at Teensforjeans.com. You can help by dropping off your jeans at one of the 800 Aeropostale locations across the US and Canada starting January 22nd (drive ends Feb. 10th) in exchange for 20% off your next pair of jeans at Aeropostale.