#Supergirl takes London! 🦸‍♀️✨ #MillyAlcock stole the show on the red carpet at a fan sneak peak event in London, alongside costars #JasonMomoa and #EveRidley, ahead of the film’s release next Friday. 📷: Jeff Spicer/Getty; Karwai Tang, Alan Chapman/Dave Benett/WireImage