Aeropostale Teens for Jeans

Locations throughout the city; visit aeropostale.com. Donate your old jeans (any size and brand) and nab 25 percent off a new style from this chain. All pairs will be given to youth community shelters through Do Something (dosomething.org), an organization that taps millions of teenagers to initiate social change. Ladies can grab skinny distressed styles for $19 (were $25), while guys will love straight-leg, dark-rinse looks marked $38 (retail $50).