Her ex-boyfriend Calvin Harris was also at the show, with his new girlfriend Taylor Swift. Awkward.
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Billboard Music Awards 2015: Red Carpet Photos
![Calvin Harris Billboard Music Awards 2015 Red Carp](https://assets.capitalxtra.com/2015/20/calvin-harris-billboard-music-awards-2015-red-carpet--1431929502-view-9.jpg)
6. Her ex-boyfriend Calvin Harris was also at the show, with his new girlfriend Taylor Swift. Awkward.
Picture: PA