Joint birthday party invitations for siblings, twins, cousins, or friends who are sharing a dual birthday party. Our joint invitations are available in designs and colors that are appropriate for a boy/girl party, all girl party or all boy party, for brothers, sisters, siblings and friends who may have a large age gap among them. The colors, fonts and wording on the invitations can be changed at your request. Having a different theme? Contact us - we can change or add graphics to meet your party theme.