She's showed off her rapping skills multiple times, but on Sunday, she got her first opportunity to rap at an actual conert.
Millie surprised the audience at a Maroon 5 concert on the weekend in Nashville, taking to the stage to rap Cardi B's part of "Girls Like You".
Millie ran on the stage looking like an absolute boss in pink flared pants, a denim jacket and her signature space buns.
KILLING IT GIRL!
Millie posted a few fan videos of her performance on her feed, writing, "soooo 2nite was insane!!! i love @maroon5 and my dear friend @adamlevine 🔥🔥🔥."
What can't this teen do?