It looks like a standard Gray/White Domestic Medium Hair. (Or Domestic Long Hair... though the tail fur doesn't look fluffy enough for a DLH.) Gorgeous kitty though! Love those white boots and the bib!
Yes, I would agree that it is a domestic long hair ... not sure if they would call it a gray tuxedo (The-color pattern) or not. Such a beautiful baby. I guess when you are as handsome/pretty as this one is ... you could just say a domestic bi-color med./long hair. :-)