Ellen’s Halloween show is one of the biggest shows she does all year. And this year one of her special guest was Ariana Grande.. and she dressed up as a super cute cow! Seriously, it was super adorable. After talking Halloween traditions with Ellen Ariana played a round of Ari smells ARI, which was Ariana being blindfolded and trying to guess which of the male models had her signature perfume ARI on. The last not-so-buff model had ARI on and of course Ariana knew her own stuff and knew it was on him. Watch the video and see Ariana Grande as a cute cow above!