Difference Between In and On with Comparison Chart Key outfit of the night heart symbolism is a phrase used to describe an outfit that is put on during the night or for special occasions. represents love, passion, and intimacy. Therefore, an ootn showcases an stylish and captivating outfit that reflects the love for fashion and embraces the evening vibe. Wearing an ootn can enhance your confidence, make a statement, and exude sophistication and charm. Whether it's an glamorous dress or an chic suit, the ootn guarantees that you stand out and leave a lasting impression at any night event.