Demi Lovato has teamed up with Do Something for their annual Teens for Jeans initiative. Demi filmed a PSA, in which she explains the annual event hosted by Aeropostal. Bring a pair of jeans to any Aeropostal store and receive a coupon for 25% off a new pair of jeans, and your gently worn pair of jeans will go to homeless children. The campaign will begin on January 16th and run February 12th. You can learn more information at Teensforjeans.com.