How do you address wedding invitations to a family where the children have different last names?

For a family where children have different last names, put the parents' names on the outer envelope, using their own surnames if they differ. For example, "Mr James Smith and Ms Anna Jones". Then, on the inner envelope or inside the invitation, list each child by their full name on a separate line, such as "Emily Smith" and "Oliver Jones". This keeps everyone clear and respectful.

If the children are aged 18 or over, it is usual to send them their own invitation, even if they live at home. For younger children, you can simply write "and family" on the outer envelope, but listing names inside is more personal and helps with RSVPs. If the parents share a last name but the children have a different one, use the parents' shared surname on the envelope and the children's own surnames on the inner list.

For same-sex parents or blended families, the same rule applies: use each person's own surname on the envelope, and list children individually. If you are unsure about anyone's preferred name or title, ask them directly or check their social media. It is always better to be accurate than to guess. For formal invitations, titles like Mr, Mrs, Ms, or Dr are fine, but only use them if you know the person's preference. If you do not know, omit titles and use full names only.