Madelaine Petsch at the 2017 American Music Awards at the Microsoft Theater in Los Angeles, California on Sunday November 19, 2017.

Demi Lovato at the 2017 American Music Awards at the Microsoft Theater in Los Angeles, California on Sunday November 19, 2017.

Ciara at the 2017 American Music Awards at the Microsoft Theater in Los Angeles, California on Sunday November 19, 2017.

Charli XCX at the MTV Europe Music Awards at the SSE Arena Wembley in London, United Kingdom on Sunday November 12, 2017.

Bebe Rexha at the 2017 American Music Awards at the Microsoft Theater in Los Angeles, California on Sunday November 19, 2017.

Bea Miller at the premiere of ‘Wonder’ in Los Angeles, California on Tuesday November 14, 2017.

Ashley Tisdale at the #REVOLVEawards at DREAM Hollywood in Los Angeles, California on Thursday November 2, 2017.

Alessia Cara at the 2017 American Music Awards at the Microsoft Theater in Los Angeles, California on Sunday November 19, 2017.

Anne Marie at the MTV Europe Music Awards at the SSE Arena Wembley in London, United Kingdom on Sunday November 12, 2017.

Hailee Steinfeld at the 2017 American Music Awards at the Microsoft Theater in Los Angeles, California on Sunday November 19, 2017.