Popsugar Entertainment Netflix Derry Girls Cast Get to Know the Cast of Your New Favourite Netflix Show, Derry Girls 30 August 2019 by Corinne Sullivan View On One Page Photo 7 of 7 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 7 Kathy Kiera Clarke as Aunt Sarah Veteran TV actress Kathy Kiera Clarke returns as eternally cool Aunt Sarah, Orla's laid-back and terribly vain mother. Previous Next Start Slideshow NetflixDerry GirlsTV