Milly Alcock’s Message to DC Fans Ahead of ‘Supergirl’ Debut (Exclusive)

Milly Alcock chats with ET’s Rachel Smith at the premiere of her new Netflix series, ‘Sirens,’ premiering May 22. Next up for the ‘House of Dragons’ alum is taking on Kara Zor-El aka Supergirl in James Gunn’s reimagined DC Universe.