Groupon has an incredibly hot offer today in various cities – Get a $50 certificate to American Apparel for only $25! You will want to be sure to check the specifics in your city, because there are slightly different restrictions.
Chicago is offering this certificate that is available in-store only. Little Rock is offering a certificate that is available online only. (If those links don’t take you to the correct cities, go through the city list at the top to get there.)
There is a limit of one per person. Certificate expires 2/19/11.
(Thanks BeCentsable!)