Addressing wedding invitation envelopes requires a balance of tradition, formality, and etiquette. Here's a guide on how to properly address wedding invitation envelopes:

Outer Envelope:

• Use full names and formal titles (if applicable) for the recipients.
• Use proper titles such as Mr., Mrs., Dr., etc., unless you're certain that the recipients prefer less formal titles.
• Spell out all words completely (e.g., "Street" instead of "St.").
• Do not abbreviate names or titles.
• Avoid using symbols such as "&" in formal addresses.

Specific Examples:

Married Couple with the Same Last Name:

Mr. and Mrs. John Smith

123 Main Street

City, State ZIP Code

Married Couple with Different Last Names:

Mr. John Smith and Mrs. Jane Doe

123 Main Street

City, State ZIP Code

Unmarried Couple Living Together:

Ms. Jane Doe and Mr. John Smith

123 Main Street

City, State ZIP Code

Family with Children under 18:

Mr. and Mrs. John Smith

Children's Names

123 Main Street

City, State ZIP Code

(for several children: "Kylie, Kyle and Savannah Smith" for 1 single child "Kylie Smith") *No titles are used for children under 18*

Family with Children over 18:

Mr. and Mrs. John Smith

Children's Names

123 Main Street

City, State ZIP Code

(Titles should be used. For example: "Ms. Kylie Smith and Mr. Kyle Smith"

Single Person Invited with Guest:

Ms. Jane Doe and Guest

123 Main Street

City, State ZIP Code