If you're on TikTok, chances are you've come across Caitlin Ann—known as @caitlinann_—whose warm, funny, and refreshingly honest videos have earned her a growing community of over 450,000 followers. Caitlin first went viral during her uni Freshers’ Week with a character called “Pistachio,” and she’s been making people smile ever since. Now studying a Master’s in Developmental Psychology at the University of Edinburgh, Caitlin shares everything from study tips and solo adventures to mental health reflections and day-in-the-life vlogs. Her content feels like catching up with a close friend—real, thoughtful, and always full of heart.