Popsugar Entertainment British Celebrities Niall Horan and Lewis Capaldi Singing “Teenage Dream” Video Niall Horan and Lewis Capaldi Singing Katy Perry’s “Teenage Dream” Is the Musical Trifecta We Needed 19 December 2019 by Angela Law View On One Page Photo 2 of 4 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 2 Previous Next Start Slideshow British CelebritiesLewis CapaldiLive MusicNiall HoranMusic