Where can I find the new "Stealth Snuggies" that will cloak me in invisibility?

You can get them in Diagon Alley. Good luck finding them, though. The Hogsmeade Prophet listed it as the #1 Christmas gift this year. Plus, they're like a 1,000 Galleons. Hey, if you find one, let me know where they are. I want one, too!