Catharine Daddario is an actress and social media sensation, best known as the younger sister of Percy Jackson star Alexandra Daddario and Shadowhunters actor Matthew Daddario. She has amassed over 190,000 followers on Instagram, where she frequently shares glimpses of her life and career. Catharine joined Twitter in 2010 and marked her presence in 2011 by tweeting her sister, saying, "@AADaddario I'll be your new stalker. Apparently on twitter they're called 'followers' Love the bunny pics-love that painting! :D". In 2020, she ventured into acting, playing the character Frieda in the independent horror film, The Retreat.
