Yes — generally speaking, junior prom is not as formal as senior prom. Junior prom dresses are often shorter than senior prom gowns and look similar to cocktail dresses. Yet, although not as formal as senior prom — which usually calls for floor-length gowns — junior prom still provides a great opportunity to dress up in a gorgeous, fancy dress! If you’re unsure of your prom’s exact dress requirements, check with your school.