Sam Smith performs ... The Grammys saw Smith and Petras perform their song "Unholy," with Smith dressed in a discount devil costume with dinky, plastic horns poking out of his top hat, as though ...
For Sam Smith ... section of the show, Smith performed “Unholy” and a cover of Madonna’s hit “Human Nature” in a bejewelled corset, thigh-high boots, devil horns and matching trident.