Emperor of Fabulous @ Leftovers
Ability: Fur Coat
EVs: 252 HP, 252 Def, 4 Sp. Def
-Toxic/ Thunder Wave
Peasants aren't worthy of breathing the same air as the Emperor of Fabulous.
So this set is basically there to stall out physical attackers, but to be honest it would work a lot better if Furfrou had a reliable recovery move outside of Rest, which it doesn't. Still, Fur Coat is an interesting ability that'll halve the damage of any physical moves, which will let it have some form of a niche in NU. You can choose to run Charm over Cotton Guard, since that will force your opponent to switch out, but really Cotton Guard is better since it boosts your stats instead.
Furfrou doesn't have a ver good move pool for attacking, and the only viable moves for a Band set would be Wild Charge, Return, Sucker Punch & U-Turn. It'd be interesting to see what moves it gets through breeding though.