27 Heartfelt Engagement Wishes for Your Sister

Send some love to your built-in best friend after they give the big "yes."
Sweet and Funny Engagement Wishes for Your Sister
Photo: La Famiglia / Shutterstock
Colleen Zewe - The Knot Contributor.
Colleen Zewe
Colleen Zewe - The Knot Contributor.
Colleen Zewe
The Knot Contributor
  • Colleen writes articles for The Knot Worldwide, with a speciality in venues and wedding stationery.
  • Prior to The Knot Worldwide, Colleen contributed to Vox’s Curbed and Her Campus.
  • Colleen holds a degree in journalism from Northwestern University.
Updated Dec 07, 2023

Your sister is engaged! This is an exciting time for her (and your fam'). She said yes to life with her S.O. and has a wedding to plan. And you have to hash out some thoughtful engagement wishes for your sister to celebrate your favorite people and welcome a new sibling-in-law to the family. A simple "congratulations" for this kind of occasion is always appreciated, but since it's your special sis', you might be looking for something more special to express how happy you are. Whether you're writing a personal card, adding a note to an engagement gift or even sending a congratulatory text, we've got you covered with ideas and etiquette for an engagement card message when your sister gives the biggest "yes" of her life.

In this article:

    Sister Engagement Wishes: Template

    We get it. Sometimes you feel overjoyed for someone, but when it comes time to put pen to paper to write down how you feel, your mind goes blank. That's why we derived this engagement wishes to a sister template to help you think of what to include in your note. Think about what you love about your sister and her S.O., any happy memories together and what makes you most excited about their upcoming wedding and their future together. If you generally follow these bullets, you'll have the perfect engagement message for your sister in no time.

    • Express your congratulations to the happy couple.
    • Show your support for this decision and share some good qualities about her partner.
    • Share a memory or two you have with the couple, such as when you first met her now fiancé, a fun double date,or when your sister first told you they were considering marriage.
    • Let them know how excited you are for the wedding and to stand by their side on the big day.
    • If you are married, feel free to offer a few words of wisdom about wedding planning or marriage.
    • Conclude by reiterating how excited and happy you feel for them.

    Sister Engagement Wishes: Short

    Whether you're sending a quick text ahead of an engagement celebration or only have a little room in the card for a personal message to accompany an engagement celebration gift, you can never go wrong with keeping your engagement message to your sister short and sweet. You don't need a ton of words to showcase how happy you feel for the couple. As long as it's heartfelt, your excitement will come through with these short engagement wishes for your sister.

    • Eek! I can't believe you're engaged! Congratulations, I can't wait for the wedding.
    • Wishing you love, happiness and good luck with wedding planning.
    • I can't wait to bring a new sibling-in-law into the mix. Congrats!
    • Cheers to the happy couple. May your lives be filled with love and laughter!
    • I can't wait to celebrate with you and your spouse-to-be at the wedding.
    • Sending you lots of love as you embark on this new journey together.
    • Celebrating the love you have for each other is going to be so much fun.
    • Cheers to a lifetime of happiness together!

    Sister Engagement Wishes: Funny

    Nobody can make you laugh the way a sibling can. You grew up together, so you know just what to say to bring on the giggles. Opting for funny engagement wishes for your sister is a great opportunity to incorporate your personality and sense of humor into your sister's engagement card. Since this is a major and happy occasion, we recommend avoiding any personal jabs and keeping it lighthearted and fun. A good rule of thumb: If you aren't sure they'll understand the joke, don't include it at all. Otherwise, feel free to have fun.

    • Congratulations on finding someone who understands all of your quirks (too many to count)!
    • To evoke the energy of Beyoncé, I am so glad your partner put a ring on it.
    • Just because you're engaged doesn't mean I'm going to stop third wheeling.
    • You'd better not pick out an ugly bridesmaids dress. Congrats!
    • Now you have to get all of our family members in a room together for a wedding. Look what you've done.
    • I can't wait for the open bar…I mean the wedding!
    • Congrats and a piece of advice: Don't build furniture together.

    Sister Engagement Wishes: Sentimental

    A sibling is a built-in friend for life. When one takes a big step like getting engaged, it's a very special moment for everyone involved, including you! For both your engagement card and your wedding wishes for your sister, feel free to get a little gushy and mushy for your sister during this happy time. Expressing your love for her and her soon to be spouse through your "happy engagement" wishes to your sister will help her feel supported and loved during this happy occasion. Especially if you are writing a card from scratch, including some personal and poetic sentiments can go a long way while congratulating your sister on her engagement.

    • It's hard to believe we went from playing pretend weddings as kids to you now planning your wedding for real. I am so happy for you!
    • The love you and your partner share for each other is clearly immense and I am so happy you are taking this big step together.
    • You have been my best friend my whole life, and it warms my heart so much to see you this happy. You deserve it.
    • You have brought so much happiness into my life and I hope your partner does the same for you.
    • To say I am happy for you is an understatement. I am so proud and overjoyed to see you entering such an exciting new phase of life.
    • I love you both so much and it is so heartwarming to see two people have so much love for each other. May you have a lifetime of happiness!
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