I purchased Samantha's plaid cape/gaiters from AG in Fall 2008, therefore it is Mattel. It is lovely, though! It's not as fancy as Samantha's holiday coat, but Samantha needs something less fancy to wear to school!
I love the green plaid color and how the cape itself fits over one of Samantha's dresses. I haven't yet tried it over her school dress, but it looks okay over Nellie's Spring Party dress.
The included gaiters are a cute touch, even though I wish the hat/muff had been included in this set as well.