![Millie Bobby Brown Covers Katy Perry’s ‘Firework': Watch](http://townsquare.media/site/252/files/2017/05/millie-bobby-brown.jpg?w=630&h=420&zc=1&s=0&a=t&q=89&w=980&q=75)
Millie Bobby Brown Covers Katy Perry’s ‘Firework': Watch
Millie Bobby Brown enchanted Argentina Comic-Con attendees on Friday, May 26 when she treated the crowd at the Netflix panel to an impromptu performance.
After speaking about her Stranger Things character, Eleven, the British actress, who's known for her love of music and singing (especially when it comes to rapping Nicki Minaj verses), sang "Ave Maria" a capella before surprising the crowd with a soulful, stripped down rendition of Katy Perry's "Firework."
Watch the adorable performance in Buenos Aires, below:
15 Strange Facts About Stranger Things:
More From 107.3 KFFM
![Weekend Box Office Report: ‘Pirates’ Plunders While ‘Baywatch’ Blunders](http://townsquare.media/site/442/files/2017/05/Pirates-of-the-Caribbean.jpg?w=980&q=75)
![Taylor Swift’s Dating Timeline: From Joe Jonas to Joe Alwyn](http://townsquare.media/site/252/files/2017/05/john-mayer-taylor-swift.jpg?w=980&q=75)
![Miranda Kerr Marries Evan Spiegel in Secret Ceremony](http://townsquare.media/site/252/files/2017/05/miranda-kerr1.jpg?w=980&q=75)
![Check Out The Strawberry Jamboree In Grandview](http://townsquare.media/site/139/files/2011/06/flagcake.jpg?w=980&q=75)
![‘Star Wars’ Actor John Boyega Amid Hundreds Evacuated During London Theater Scare](http://townsquare.media/site/252/files/2017/05/john-boyega.jpg?w=980&q=75)
![Niall Horan Peer Pressures Jimmy Fallon Into Doing ‘Gangnam Style’ Dance](http://townsquare.media/site/252/files/2017/05/niall-horan-jimmy-fallon.jpg?w=980&q=75)
![Halsey and Lauren Jauregui Collaborate on Pro-LGBTQ ‘Strangers': Listen](http://townsquare.media/site/252/files/2017/05/halsey-lauren-jauregui.jpg?w=980&q=75)
![Major Lazer and Camila Cabello Debut ‘Know No Better’ in Miami](http://townsquare.media/site/252/files/2017/05/camila-cabello2.jpg?w=980&q=75)
![Rob Huebel on Mariah Carey Filming ‘The House': ‘It Did Not Go Well’](http://townsquare.media/site/252/files/2017/05/GettyImages-652234330.jpg?w=980&q=75)