Justin Bieber, we have a question for you: What do you mean?(Sorry.)(Okay, really sorry.) Bella's participation in the protest came just one day after she took toInstagram 's Jimmy O. Yang — all together in a karaoke room taking turns singing "Waste It On Me." It is, to put it mildly, the most delightful and perfect thing you're going to see all week.PerPopSugar is also pretty excited to have Taylor as her co-star. She spoke withEntertainment Tonight