"I discovered when I was little that I could pretend I was in a box...I was a lonely child," the 26-year-old quipped, before breaking into a few bars of "Bang Bang," her hit with Ariana Grande. We have no clue how she manages to do it, but just watch the clip and prepare to be amazed.
The singer is currently on her UK tour, and if she sounds this amazing singing with her mouth closed on TV, we can only imagine she'll completely kill it live.
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