Remind me to never challenge Millie Bobby Brown to a lip-sync battle, unless I want a real blow to my self-confidence. I learned my lesson after the Enola Holmes actress joined Tonight Show host Jimmy Fallon for a sing-off of epic proportions on Oct. 2. We already knew Brown has musical talent, but their recent showdown proved she's fully committed to any type of performance — even if it means wearing an inflatable alien costume while singing the Jonas Brothers.
Yes, Brown gave her best "Year 3000" rendition in an out-of-this world outfit, and naturally, she nailed it. Fallon, on the other hand, opted for Dua Lipa's "Don't Start Now" and BTS's "Dynamite" for his turns. He certainly brought the choreography for his numbers, but Brown nailed her win with an awesome "Hot N Cold" performance à la Katy Perry. Watch the full video performance above.