Blue “First Communion” Cups. Celebrate your child's first taste of this faith-filled experience with these Blue “First Communion” Cups. These colorful 9 oz. paper cups are an excellent addition for continuing to enjoy this blessed event after your church service finishes to fill your day with great faith and good fun. Shop even more 1st Communion religious party supplies online to help make this special event a moment all your family and friends can cherish with your child. (18 pcs. per set) 3 3/4"