Popsugar Entertainment Euphoria How Old Is the Cast of Euphoria? How Old Are the Teenagers on Euphoria? An Investigation 7 August 2019 by Amanda Prahl View On One Page Photo 8 of 10 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 8 Sydney Sweeney, aka Cassie Howard: 21 Previous Next Start Slideshow EuphoriaTV