GENDER REVEAL BALLOON How does it work? The parents plan an ultrasound with their doctor but instead of the doctor saying the gender out loud, he or she will write the gender on a note and slip it inside of an envelope. The parents can hand this envelope over to a friend or family member who has offered to plan the party. If the parents would like to plan the party, all they have to do is hand the envelope to the balloon artist who will prepare the gender reveal balloon. After that its just about the party and the countdown.