Target Spring 2012 Beauty Bag

Gah! Mr. G is going to kill me for still being at my desk and not in bed right now, but right as I was signing off, I received a message on Facebook from reader Danielle letting us know that the Target Spring Beauty Bag is now up, BUT there's a catch:

Unlike the previous Target Beauty Bags, you'll need to enter a special code in order to sign up for this free beauty bag. How do you get the