3,073 Purim Costume Stock Photos, High Res Pictures, and Images Getty Images Orthodox Jewish girls are seen wearing fancy dresses during the festival of Purim on the streets of Stamford Hill in north London. Purim is one of the most entertaining Jewish holidays. It Why do Jewish people wear costumes on the Jewish holiday of purim? On Purim, we wear costumes to symbolize how the holiday's miracles were hidden within natural events. Just as Gd's intervention So I built a snowman Today is Purim in Israel. Purim is a Jewish holiday that is celebrated by dressing up. What do you think of Young's custom?