Birthday Wishes for Sister from Another Mother

“Family isn’t always blood. It’s the people in your life who want you in theirs”. When I read this beautiful quote I am reminded of the term having a sister of another mother and this quoted reflects exactly on being such a sister.

Did you know that 89 percent of woman-hood view their best girl-friend as a sister? That is the amazing strength of the chosen family!

Your sister by another mother is not only a friend but the one who prefers to treat you as a family, who supported you through all the laughs, tears, and moments changing your life.

It is not another day of celebration, but her birthday is an opportunity to celebrate the woman who became your sister by choice and not chance.

It could be tough to get the right birthday greetings to your sister from another mother. And how can you sum up years of secrets, unconditional support and love of a sister in a few words?

You desire something that recognizes this extraordinary relationship- greater than a mere friendship, more valuable than blood kin.

I have collected more than 60 warm birthday greetings in honor of this fantastic partnership!

If you want quotes that will make her cry happy tears, or funny messages that will reflect your lighthearted sisterly relationship, or short wishes that can say happy birthday sister, another mother with pure loving intent, you will find it down the line.

Curious to learn more about the strong connections of chosen family? This Psychology Today article on The Importance of Chosen Family beautifully covers some of the reasons why such relationships are as important, perhaps even more so than, blood ties.

Table of Contents

Short & Sweet Sister from Another Mother Quotes

appy birthday wishes for sister from another mother

HBD to you, my dear sister! May your day be as fabulous as you are!
Wishing you the sweet, heart touching birthday you deserve today, sis.
I wouldn’t trade the bond we share for anything in the world, sis. Love you!
Today and always, you’re in my thoughts and prayers. Sending you sweet birthday blessings, sis.
Happy birthday to my second sister! You’ll always have a special place in my heart!
“There’s no better friend than a sister.” — Mary Engelbreit
Sending heartfelt birthday wishes to my number 1 girlie!
You will always be my inspiration, bestie. Wishing the happiest of birthdays to you.
Today, I have only the sweetest birthday wishes for my big sister from another mother!
We’ll be there for each other through thick and thin. I’ll always have your back, girl.
Thank you for keeping me sane in this crazy world, my fabulously funny friend!
Another birthday already, girl! What happened to us, when did we get so old!
On this special day, I’m thankful to your mom for bringing my BFF into the world!
I’m wishing you the warmest and happiest birthday yet, my dear sister!
We may not be siblings from birth, but you’re for sure my soul sister.
Sending you big hugs and kisses on your special day today, bestie!
Happy birthday to a friend and sister rolled into one! We’re practically twins!
“Sisters are different flowers from the same garden.”
No matter how old we get, we’ll always be there for each other. You’ll forever be my favorite gal pal.
Happy birthday to a one-of-a-kind friend, one I am so lucky to have in my life.
Happy birthday, girl. On your special day, I hope you know that you mean the world to me.
In you, I have a best friend and sister for life. I’m truly grateful for you.
Happy birthday to my number one girl! To me, you’ll always be more like a sister!
Few friends are like sisters, but then again few friends are like you.
I’m so blessed to have a friend like you in my life who I can proudly call a sister.
You’re my sister not by blood, but by heart. Happy birthday, girl.
Sending the best birthday wishes to my sister from another mother!
Happy birthday to my sister from another mother, who quite simply is like no other!
Sisterhood is a relationship between sisters, a bond I’m blessed to share with you.
A chosen sister is the most precious kind of sister. Happy heartfelt birthday, sis.
Happy birthday to the biggest blessing in my life: my dear sis from another miss!
HBD to my sister from another mother; my partner in crime and best friend in the world!

Longer, Heart Touching Birthday Wishes for Sister from Another Mother

You may not be my sister by blood
But you will always be my sister at heart. Nothing can take that away from us! Happy birthday, my dear!
A dear gal pal like you
Who’s so funny and sweet Is much more like a sister than anyone I’ll meet! Happy birthday, bestie!
Happy birthday to you today, sis!
We may not share the same mother but that makes no difference to me. You are more caring, supportive, and loyal than many full sisters out there!
To my very best friend in the whole World
My confidante and dear sister at heart, I am wishing you the most wonderful birthday ever today! Always know that you are my family, and the small fact that you come from
a different mother doesn’t make you any less of a sister to me! Big hugs to you on your special day!
You are my true sister from another mother
Happy birthday, girl. I hope you know, on your special day of all days, that you truly mean the world to me. You are my true sister from another mother.
My true soul sister and gal pal for life
Happy birthday to my true soul sister, my dear gal pal for life. The fact that you came into this world from another mother, is the only one thing that sets us apart from biological siblings, and you’ll always be able to quote me on that.

birthday quotes for sister from another mother

You are one of a kind
I hope the celebrations on your special day this year leave you feeling pleased and elated, my dear. You are one of a kind, someone so special to me, and, in me, I hope you know you’ll always have a true sister. Happy birthday!
From one sister to another
From one sister to another although from a different mother, I’m wishing you a special day and hoping it all goes your way! Happy birthday!
A friend and a sister rolled into one
Happy birthday to the biggest blessing in my life: my dear sis from another miss! We’re practically twins and to me, you’re a friend and a sister rolled into one!
We may not share the same mother
Happy birthday to you today, sis! We may not share the same mother but that makes no difference to me. You are more caring, supportive, and loyal than many full sisters out there! No matter what, you will always be the most complete sister to me.
My forever favorite gal pal
Another birthday already, girl! What happened to us, when did we get so old! No matter how old we get, we’ll always be there for each other and you’ll forever be my favorite gal pal. I hope you enjoy your special day, bestie.
My best friend and partner in crime
Happy birthday to my sister from another mother, my partner in crime and best friend in the whole world! If we were actually related we would be twins because we simply share so many similarities! Sending you big hugs and kisses on your special day today!
I found a true friend and sister in you
We may have come from different beginnings, but when our paths crossed, our lives became intertwined, and in you, I found a true friend and sister! Happy birthday, bestie!
You’re the sister I never had!
We have a better connection and superior relationship than many blood-related siblings! To me, you’re the sister I never had and the best friend a person could wish for. I’m sending lots of love, hugs, and kisses your way today, bestie! Happy birthday!
Happy birthday to my homegirl!
Happy birthday to my homegirl! We were brought into the world by different mothers, but somewhere along the way our souls connected and we took it upon ourselves to unite as sisters. In you, I have found a companion for life.
I consider you family.
Blood relations may share special relationships, but there are also many other ways in which precious bonds and unique friendships are formed. I want you to know that you are more than just a friend. To me, I consider you my family and my sister from another mother! I’m wishing you an absolutely wonderful birthday today, my dearest!
You’re a true friend like no other, girl!
A sister from another mother, a true friend like no other. I’m so lucky to have you in my life. I’ll cherish our friendship forever. Happy birthday to you, girl!
A sister from a different mother and mister
Happy birthday, my dear! I hope you have a fantastic day full of celebration today as you’re a true friend of mine, a real sister from another mother and mister!
You are the sister I got to choose
You are the sister I got to choose, and I couldn’t have chosen better. Happy birthday to my fabulous sister from another mother..
My confidante and sister at heart
To my very best friend in the whole world, my confidante and dear sister at heart, I am wishing you the most wonderful birthday ever today! Always know that you are my family, and the small fact that we come from different mothers doesn’t make you any less of a sister to me! Big hugs to you on your special day!.
You’ll always be like family to me
I am eternally blessed to have a friend like you in my life who I can proudly call a sister. You are, and always will be, like family to me. I’m wishing you the warmest and happiest birthday yet, my dear!.
There for each other through thick and thin
Your mother is like my mother, which must make us sisters! We’ve been there for each other through thick and thin, and you’re my best friend in the whole world. I wish only happiness for you always, dear! Happy birthday!
A best friend and soul sister
The very best friend I could wish for, so kind and so true, will always be dear to me. A soul sister like you. Happy birthday, bestie!
Happy birthday to my number one girl!
Happy birthday to my number one girl! To me, you will always be so much more than just a friend and much more like a sister from another!
Your mom and dad gave me the greatest gift!
Happy birthday to you, my dearest sister from another! I am so thankful to your mother and father for giving me the greatest gift in the world: you! You are a one-of-a-kind friend and one I am so lucky to have in my life.
Happy birthday to the most amazing sister I never knew
I needed until life brought you into my world. On your special day, I just want to thank you for being you—kind, strong, funny, and incredibly beautiful inside and out. May your year ahead be filled with blessings as extraordinary as your heart.
To my sister from another mother—Happy Birthday!
You came into my life like a ray of sunshine and have stayed ever since like the moon—constant and comforting. We’ve laughed till we cried, cried till we laughed, and made countless memories that I’ll treasure forever.
You’re not just a friend; you’re my family by heart and soul.
I hope today reminds you of how loved and cherished you are—not just by me, but by everyone lucky enough to know you. May your dreams grow bigger, your worries shrink smaller, and your heart stay as golden as it’s always been.
Your presence in my life has been nothing short of a blessing.
Your advice, your laughter, your hugs, and even your tough love when I needed it most. Thank you for accepting me with all my flaws and never letting me face life’s storms alone. On your special day, I wish you happiness deeper than the ocean, laughter that echoes for days, and a heart full of peace and pride for the beautiful person you are.
Sisters aren’t always born in the same home.
They’re found in the most unexpected moments, in the deepest connections, and in hearts that just click. You’re my sister from another mother, and I can’t imagine my life without you in it. May this year bless you with everything your soul longs for and more. Happiest birthday, my forever sister.
You’re not just my friend, you’re the sister I got to choose.
And what a blessing that is! On your birthday, I want you to know that you are deeply appreciated. Every moment spent with you is a gift, every memory made is golden. May life reward you for your endless kindness, your loyalty, and your incredibly beautiful heart. Happy birthday, sis—from another mother but forever a sister in love and soul.

best birthday wishes for sister from another mom

Conclusion

A sister from another mother is a special and beautiful relationship and is not created by the blood but by the heart. The birthday is not only the celebration but also an opportunity to show how highly respected and appreciated she is. It can be so simple or so heartfelt and detailed, but no matter what the important thing is the sincerity of your words. Show your love, express your gratitude and appreciation so that she could remember that she is that special person in your life. You share not only her birthday party, but also the special bond between two sisters, one that is based on love, loyalty and being genuine.

If you are also looking for sweet ways to wish a dear cousin on her special day then do look at these lovely birthday wishes for a cousin sister that talk about the bond of sisterhood in all its glory.