I am not sure if this is the Groupon deal in every city today, but I checked a couple and they all had it.
The deal is $25 for a $50 gift certificate to American Apparel, a great value if you are in the market for some of their winter leggings, or one of those circle scarves. They have been stepping up their 2- and 3X offerings of late, too! FYI, I wear either the L or XL leggings comfortably.
And of course I prefer if you sign up using my unique referral code, but that's entirely optional. ;)
ETA: Today they are offering a Nordstrom Rack deal. Get it!