Big Sister Announcement Ideas and Matching Card Designs

Is your daughter getting promoted to the all-important role of big sister? Congratulations! Share your joy and include her in this exciting news with a big sister announcement.

There are many ways to let friends and family know about your family’s new arrival. From funny pregnancy announcements to formal declarations, discover some of our favorite big sister announcement ideas. 

We’ve included easy DIY ideas you can pull together easily along with more elaborate options if you want to go over the top. Plus, you’ll find stunning pregnancy announcement designs to match the magic of the moment.

11 Fun and Creative Ideas for a Big Sister Announcement

Want to make your older daughter feel special and cherished as you let people know you’re adding to your family? Consider sharing a big sister announcement where your daughter plays a starring role. It helps build excitement for the arrival of your new bundle of joy while also showing your older child how fun this new chapter will be for her too.

Whether you want to take a family photo with a magical backdrop, wear silly T-shirts, or have fun with the news, there’s something on this list for you. (And just in case, we also have a list of ideas for big brother announcements too!)

1. “Going to Be a Big Sister” Sign

Design: Jessica Williams (photo courtesy of Julia Kinnunen Photography)

One of the easiest and most fun announcements is to create a sign announcing that your older child will be a big sister. Order an artist-curated sign from a site like Etsy or a local designer — or make one yourself. 

Create a sign using wood and glass and write a fun saying announcing the new sibling. You can include colors like pink or blue if you want it to be a gender reveal too.

Add a photo of the sign to a digital card like this Big Sibling Announcement. Customize the script and choose from several color palettes for a lovely card and corresponding envelope.

2. Book Announcement

One of our favorite sibling pregnancy announcement ideas is to declare the news with a kid’s book. This is particularly fun if you already have a couple of children running around. Have them sit in their reading chairs or cozy up on the bed. 

Make sure you have a book about a new baby and take photos of the kids reading the book. For an artsy take, focus the camera lens on the book and have the background with your older children slightly out of focus. For a funny pregnancy announcement, choose a comical book title or add props for the kiddos to use during the shoot. 

3. Superhero Chalkboard Sign

Design: Kate Ross Design

Does your little girl love superheroes? Announce the arrival of her new sidekick with a hero-themed chalkboard sign. Have the older sibling stand beside the sign wearing her favorite superhero attire. Write fun phrases like “New baby sidekick on the way” or “Partner in crime arriving soon” to play up the theme.

Upload your photo to a design like the Sweet Doodle Frame Announcement, which features a hand-drawn, whimsical border. Customize the copy to reflect the big sister announcement and personalize the colors to make it your own.

4. Matching Onesie Announcement

Matching onesies are the perfect way to announce the arrival of a new bundle of joy. Take a picture of your older child lying next to a onesie. You can also have her hold the onesie up if she’s a little older. Add miniature signs with the words “Big Sister” or “Only child status expiring soon!”

5. Kisses Pregnancy Announcement Shirt

For a sweet big sister announcement, plan a photo shoot that stars you and the older sibling. You can have your daughter kiss your baby bump and write a few sentimental words like “Can’t wait for the arrival of our second baby” or “She’s going to be the best big sister.” 

6. “Big Sister to Be” Letterboard Sign

Design: Claudia Owen

Letterboards bring us back to our days at school when we’d create fun words with friends. Bring that magic to your pregnancy or birth announcement by using a letterboard to share the happy news. 

Have the big sis hold the sign and use the letters to spell out a special message. You can write things like “A little one is on the way” or “I’m not the only little girl in this family anymore” for the big sister reveal.

Use a card like the Classic Letterboard Announcement to share with loved ones. The supported backside leaves room to upload an image or write a special message.

7. Balloon Baby Announcement

Design: Bonjour Berry (photos courtesy of Amber Zbitnoff)

If your older daughter is still pretty young, you want to make the announcement photo shoot fun and engaging. Incorporate balloons, confetti, and streamers your child can play with while a professional photographer snaps pics. 

Want to make it a balloon-themed baby reveal? Use the Duckling Twins Announcement card to share your photos. It features two photo slots and comes in five artist-curated color palettes for a memorable big sister pregnancy announcement.

8. Baby Number Pregnancy Announcement

Share the fun news of a new baby sister with a number announcement. Get together with your kids and write numbers on their tummies based on who was born first. Your oldest child would have the number 1, the second born would have the number 2, and then you can write the number 3 on your baby bump.

9. Big Sister Announcement Shirt

Design: Claudia Owen (photos courtesy of Julia Kinnunen Photography)

Let a T-shirt do all the talking for you. With this idea, pick out a tee for your older daughter that says “This is my big sister T-shirt.” You can also choose one with the words “only child” crossed out and “big sister” written below.

A digital card like the Lined Ampersand Announcement is the perfect backdrop to share your T-shirt photo. You can also upload a snap of your new baby, the entire family, or whatever image you want since there are two photo slots on this card.

10. Seasonal Pregnancy Announcement

Tie in the season and book a professional photo shoot to share your happy news. For a Christmas pregnancy announcement, add props like candy canes, elf onesies, and reindeer to announce the promotion of your older daughter to big sister.

For a fall-themed announcement, pumpkins, haystacks, and leaves set the scene to share the news of a baby girl or boy. In summer, beach balls and sand are right at home while baby’s breath and soft pastels are perfect for spring babies. 

Make sure your older daughter plays a starring role in the photo shoot. She can hold a sign or wear a themed shirt announcing the arrival of her little sister or brother. Share the seasonal snaps on social media or upload them to a digital announcement card.

11. New Adventure Announcement

Design: Pedaller Designs

Plan a fun adventure to a place like a Disney theme park or a National Park to announce the news of your latest adventure. Take a family photo and upload it to an announcement photo card. Add a message like “Our new adventure starts soon” and include your due date.

If you don’t want to do a whole photo shoot, choose an adventure-themed card like the Baby Adventures Announcement. Customize the text to say “We’re thrilled to announce Sadie is going to be a big sister” or something similar for your sibling baby announcement.

Share Your Joy with a Big Sister Announcement Card

When you’re ready to share the happy news of a new baby, take these fun ideas and turn them into your unique pregnancy announcement. Browse our large selection of designs curated by artists from around the globe. From vibrant designs and photo cards to neutral and formal themes, there’s a perfect way to share your big sister announcement.

Once you choose a design, start customizing the copy, typography, and color schemes. Add elements like music and photo stamps for a personal touch. Upload your contacts and send the invites off in seconds via email and text. Your recipients will be delighted with the wonderful news.