Watch The Ugly Christmas Sweater Full Movie Free Online 123Movies. During her first days working at a social media company, Megan’s team is tasked with finding the best Christmas hashtag and she is determined to be the one to do so to impress her boss and the cute guy in her cubicle. However, when she is forced to wear her eccentric grandmother’s gift—an ugly Christmas sweater—her unfortunate turn of events may well be the key to winning over her new boss and her new beau.