50+ Happy Birthday Wishes for Sister from Another 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.
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!
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!
You might be from a totally different family, but you will always be a true sister to me. Happy birthday to you today, my dear best friend.
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!
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 one and only thing that sets us apart from biological siblings, and you’ll always be able to quote me on that.
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!
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!
You are a girl I can always count on
and you’ll always be more like a
sister to me than just my best friend.

Happy birthday, my dearest!
You’re more than just a great friend to me;
you’re a true sister in every sense of the
word. You give me the confidence and
courage to stand for what I believe in and
you encourage me to pursue my dreams.

Without you by my side, I wouldn’t be
nearly half the person that I am.

I’m sending all my love to you today on
your special day!
Happy birthday to the one person in
the world I could never be without!

You are my best gal pal and sis from
another, and you continuously manage
to make each day brighter than before!

Sending lots of love your way today, girl!
We may not share the same mother,
but within us deep at heart, you will
always be my true sister.

I’m wishing you the loveliest birthday
today, my dear!
Few friends are like sisters
And few friends are like you!

Happy birthday to you, my
Sis from another miss!
Someone like you will always be much
more like a sister to me than simply
just a best friend. I’m so lucky to be
blessed with the best; a bestie so great.

Wishing you a fabulous day, girl.
A lifetime of gal pals couldn’t compare to the wonderful friend that you are! You are more like a sister to me, just from another mother! Happy birthday!

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