What a great thread! The original Kelly, of course, was in box calf and then toile with leather, but some of the newer leathers look great in a Kelly. I think any of the bags in 35 cm is more casual; 35 is too big to be dressy and looks better as an everyday bag to hold alot of stuff. I agree with others that Kelly in togo or clemence looks better in colors other than black. And--I have a black sellier Kelly in a 35 size and I think it is too structured for such a big size. So--my perfect wardrobe of Kellys would be 1) a 28 or 30 cm Kelly croc in sellier--probably black or miel if I wanted something in the brown family 2) a 32 retourne box calf Rouge H Kelly , an absolute classic and 3) a gold or etoupe (or some other light-to-medium Kelly 35 in togo or clemence. (I should be so lucky to have all 3.) And then I would have something to carry for dressy, casual, or in-between times!