Addressing Invitations

Generally, all adults/family units should receive their own invitation. So, in this situation, your suggestion of sending one to your aunt individually, and then one to your cousin's family (i.e. The Anderson Family) is the right approach.

Yup! That's how I'm doing it. We have adult cousins (18+) who are living at home still, and they are receiving their own individual invitations. The only ones that are being grouped with "and family" are for young children, who are all in our wedding party anyways.

For save the dates we just sent one to each address. But for invites we're giving each adult child their own within the same address.

We ran into this too. Both FH and I have aunts and uncles with adult children (our cousins) who are either in college or live at home, and the cousins' significant others are being invited or they're getting +1s. We addressed those separately as "Mr. and Mrs. X," "Cousin X and Date," and/ or "Cousin X and Guest." I think that's the "proper" way to do it, and logistically, it works better than trying to fit "Aunt X, Uncle X, Cousin X, and Date of Cousin X" all on one envelope.

Came here to day this haha! I have several adult cousins who still live at home who will be receiving their own invitations. I decided to send one save the date to the family household but invites will be sent to all guests over 18.