How to Choose the Right Stationery Sizes for Your Wedding Suite
Your wedding stationery is more than just paper. It’s the first impression your guests get of your wedding style, your attention to detail, and the experience you’re creating. Choosing the right stationery sizes for your wedding suite helps everything feel intentional, polished, and easy to mail (which matters more than most couples realize).
In this guide, I’ll walk you through the most common wedding stationery sizes, what each piece is used for, and how to choose the right options for your wedding.
Wedding Invitation Size Matters
Your main wedding invitation is the heart of your stationery suite. This is the piece that sets the tone for everything else.
The most common and widely loved size is 5 × 7 inches, which fits into an A7 envelope. This size works so well because:
There’s enough space for clear, readable wording
It feels elegant without being overwhelming
It usually mails with standard postage
If you’re going for something more modern or bold, you might also consider:
Slim invitations (around 6 × 9 inches) for a contemporary look
Square invitations for a statement feel (just note they require extra postage)
As a general rule, the more formal or detailed your design is, the more space you’ll want.
Pairing the Right RSVP Card
RSVP cards should feel supportive, not competitive, to your main invitation.
The most common RSVP card size is A1 (3.5 × 5 inches). It’s small, neat, and fits perfectly into your invitation envelope without adding bulk.
If your RSVP includes:
Meal choices
Dietary restrictions
Additional questions
You may need a slightly larger size, like A2 (4.25 × 5.5 inches).
Many couples today also include a QR code that links to online RSVPs, which allows you to keep the card minimal while still being functional.
Adding an Accommodations or Details Card
Details cards help keep your invitation clean and easy to read.
Instead of crowding everything onto one card, a separate details or accommodations card can include:
Hotel room blocks
Transportation info
Wedding website
Weekend schedule highlights
The most common sizes are:
A2 (4.25 × 5.5 inches) for short details
A6 (4.75 × 6.5 inches) if you need more space
Your details card should always be smaller than or equal to your invitation, never larger.
Save the Date Cards
Save the dates are often the first piece of wedding stationery guests receive, usually sent 6–8 months before the wedding.
Popular save-the-date sizes include:
A2 (4.25 × 5.5 inches)
A6 (4.75 × 6.5 inches)
Postcard-style save the dates are also a great option, especially if you’re including a photo or want to keep costs down.
Save the dates don’t have to match your invitations, but coordinating them creates a more cohesive experience.
Thank You Cards That Fit Just Right
Thank-you cards are a small but meaningful part of your wedding stationery story.
The most common sizes are:
A1 or A2 folded cards
These sizes give you enough space for a handwritten message without feeling oversized. Many couples choose to match their thank-you cards to their invitation style for consistency.
Choosing the Right Envelope Size
Your envelopes should always be slightly larger than the cards inside—typically by about ¼ to ½ inch.
Here’s a quick guide:
5 × 7 invitation → A7 envelope
A2 card → A2 envelope
A6 card → A6 envelope
Always do a test assembly before mailing, especially if you’re using thick paper, multiple inserts, wax seals, or ribbon.
Final Tips for a Polished Look
A few professional tips I always share with my couples:
Layer thoughtfully: Place the largest card at the back and smaller cards on top
Check postage early: Heavier paper and embellishments may require extra postage
Order samples: Seeing sizes in person helps avoid surprises
Keep it readable: Beautiful design means nothing if guests can’t read it easily
Your Complete Wedding Stationery Checklist
Not every wedding needs every piece of stationery. This checklist helps you decide what’s essential and what’s optional.
Engagement Party Invitations
Optional, but fun. Usually A7 size.
Bridesmaid Proposal Cards
Typically folded A2 cards with space for a handwritten note.
Save the Date Cards
A2 or A6 sizes, mailed early to help guests plan.
Bridal Shower Invitations
Usually chosen by the host; A7 is most common.
Bridal Shower Thank You Cards
Folded A2 or A7 cards.
Wedding Invitations
The main event. Most commonly 5 × 7 inches.
Response Card (RSVP)
A1 or A2 size, mailed or linked to online RSVP.
Enclosure Card (Details Card)
For accommodations, website, and extra info.
Rehearsal Dinner Invitations
Often A7 size, especially for formal events.
Bachelor/Bachelorette Party Invitations
Optional, but helpful for larger groups.
Ceremony Programs
A7 flat, folded, or booklet style.
Guest Book
Typically 8 × 10 inches or similar.
Escort Cards / Escort Board
Used for seating assignments.
Place Cards
Folded, business-card size.
Table Numbers
Usually A7 size.
Menus
A7 flat or tall formats work well.
Wedding Table Thank You Notes
Often A7 or tea-length cards.
Wedding Welcome Bag Notes
A7 or smaller.
Wedding Welcome Bag Tags or Labels
Gift-tag size or custom labels.
Wedding Signs
Sizes vary depending on placement and purpose.
Thank You Cards
Folded A2 or A7 cards.
What Every Bride Should Know About Wedding Detail Cards
Detail cards help guide guests without overwhelming them. Keep wording short, point guests to your wedding website, and avoid cramming too much information onto one card. Clear, simple stationery always feels more elevated.
FAQ’s About Custom Wedding Stationery
What is custom wedding stationery?
Custom wedding stationery is designed specifically for you—your colors, your style, your story. Nothing is reused or templated.
Are custom wedding invitations worth it?
If you care about personalization, cohesive design, and quality, yes. Custom stationery creates a memorable guest experience from start to finish.
How long does custom wedding stationery take with Wedding Design Karli?
My signature process is a one-week design timeline, covering everything from invitations to day-of stationery.
Can I edit my files myself?
Yes. I provide Canva-editable files, so you have full control after design is complete.
Do you design all wedding stationery pieces?
Yes. I design full suites—from save the dates to menus, signage, and thank-you cards—so everything feels cohesive.
If you want wedding stationery that feels intentional, personal, and beautifully designed (without dragging on for months), you’re in the right place.
