Popsugar Entertainment Euphoria HBO's Euphoria Cast We're Already Huge Fans of the Wildly Talented Cast of HBO's Euphoria 16 August 2019 by Mekishana Pierre View On One Page Photo 8 of 12 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 8 Sydney Sweeney as Cassie Howard A sweet senior and Lexi's older sister, Cassie has an "infamous" sexual past that she just can't leave behind. Previous Next Start Slideshow EuphoriaJacob ElordiStorm ReidZendayaMovie CastingTV