What Does #OOTN Mean The #OOTN Meaning on Social Mediaoutfit of the night heart significance is a term used to represent an ensemble that is worn in the evening or for special occasions. Heart symbolizes love, passion, and intimacy. Therefore, an ootn showcases a stylish and alluring attire that mirrors the affection for fashion and enjoys the evening vibe. Wearing an ootn can enhance your confidence, make a statement, and exude sophistication and charm. No matter it's a glamorous dress or a chic suit, the ootn guarantees that you catch everyone's attention and leave a lasting impression at any night event.