Do you know why all the girls wear white for graduation? Wearing white during graduation has been an American tradition since the mid 1800s. Wearing white originally started because many schools wanted their Ace One Shoulder White Graduation Dress PromGirl Lilac Small Berylove Women White Graduation Dress A Line Spaghetti Straps Midi Grad Ceremony Dress, White US24W White Graduation Dresses An SMU Cherished Tradition The Daily Campus High school graduation traditions cherished in North Jersey The Stories Behind the College of Charleston's Iconic Commencement Traditions