I have to admit I didn't think this was the most interesting palette YSL has come out with, but I thought enough of it to buy it for the Museum. It's basically the YSL "Y-Mail" bag, which bears the French address of the YSL boutique, in highlighter form.
Outer case (excuse my grubby paw prints):
The powder, with and without flash:
The Y-Mail bags were originally released in spring 2008, so why YSL is coming out with palette inspired by them now is a little strange. Perhaps they're running out of ideas, since they came out with a Y-Bag inspired palette this past fall. Still, while the concept isn't all that original, I do like the partial-stamp design in the powder itself. And since I'm a sucker for anything miniature, I love the little replica bag!