It's Billie, b*tch. The 17-year-old singer recently performed at KIIS FM's Jingle Ball concert [1] on Dec. 6, and her outfit paid tribute to another iconic musician: Britney Spears [2]. That's right, Billie sang in a head-to-toe homage to the "Toxic" queen herself. Billie's shirt featured a massive print of Britney's face on the front, while her shorts showed off another image and the singer's name.

Billie's unique sense of style [3] has set quite a tone in 2019 [4], and we expect her influence to continue in the new year. She inspired a number of Halloween costumes [5] back in October, and she certainly isn't afraid to take risks on the red carpet. Now, her love for Britney only makes us adore her more! Keep reading to see her incredible look from all angles, below.