I found this on Deal Seeking Mom:
Get a FREE tank top from AÉROPOSTALE when you take in the cover of the latest Seventeen magazine or a printout of the seventeen.com homepage.
Starting March 3, 2009, bring a copy of the April 2009 issue of Seventeen and show the page with the featured Aéropostale tank, or a printout of the seventeen.com homepage, to a participating Aéropostale store to receive 1 (one) tank top from Aéropostale. One tank top per person. While supplies last. There are 30,000 tank tops available nationwide. Promotion ends April 6, 2009. A notice will be posted on seventeen.com when Sponsor has given away all 30,000 tank tops.