100+ Birthday Wishes for Your Cousin Sister To Make Her Special Day Sweeter


For a cousin and a sister all rolled into one
I’m wishing you a birthday that’s full of fun!

Happy birthday, my dear! 

Here’s to the many years of laughter and 
creating wonderful memories together 
that are still waiting to be written!
Happy birthday to my amazing cousin
My dearest relation, who isn’t only an incredible cousin but also an amazing friend and sister to me.

I wish you happiness today on your birthday, and forever more!
Don’t worry about getting older, my
dear cousin!

It happens to us all but luckily for us,
we have great genes that should see
us age more gracefully than others!
How fortunate are we!

I hope you have a birthday that’s as
beautiful and fabulous as you are!
My dear, I am wishing
you the very best on
your special day today!

Deep down in my heart
you are my sister, even if
officially you are my cousin.

You are such a beautiful soul
and I wish for nothing but the
best in life for you, as you truly
deserve it.

I hope you have the most fab
birthday ever!
Wishing a happy birthday to a sister-
like friend and person like no other:
my dearest cousin!

Have a fabulous day, my lovely!
I wanted to get something extraordinary 
and particularly special for a cousin 
who is more like a sister to me, 
but then I realized something:
You already have all of that in me!

I hope your birthday is as wonderful and 
as meaningful as you are to me, my dear! 
Wishing a very happy birthday to you!
Wishing the absolute best birthday
to my true sister at heart!

You may be my cousin but you far
surpass that, to me you’ll always
be much more like a sister!

Enjoy your special day, my dear!
Lots of love, big kisses and
enormous hugs to you!
Happy birthday to my dear cousin!

I’m so grateful to have had you in my
life since we were kids! 

You are everything I could ever wish
for in a cousin and more. In truth, I
have always seen you as more of a
sister figure in my life than a cousin.

I hope that you know you can always
rely on me, the same way I know I
can rely on you!

Have a fantastic birthday, sis!
Happy birthday to my dear cousin!

We were inseparable as kids,
spending almost every minute
together! I honestly don’t know
what I would’ve done without
you growing up!

In truth, we’ve always been so close
and we were together so much
throughout our childhood that I have
always seen you more like a sister
to me than a cousin.

Wishing you all the love and happiness
in the world on your special day!
It is true that on paper you are my
cousin, but in my heart, you are
more like a sister to me.

I have so much love and admiration
for you, my dear, and I hope you
know that I will always be here for
you whenever you need me!

I’m wishing you the very best birthday
possible today and I wish you but
happiness for all the days to come!
Happy birthday, my dear cousin!

There aren’t many people I would choose to be my cousin and there are even fewer I’d choose to be my sister. Luckily, I didn’t have to choose between either with you as I was handed the 2 in 1!
If you weren’t my cousin
You would be my sibling
As you truly are my sister 
Just from another mister!

Happy birthday, my dear!
My darling cousin, congratulations on yet another incredible year!

I’m a strong believer that blood is thicker than water, and particularly in our case, it couldn’t be any more accurate! Our bond is so close, more likened to that of sisters, and I wouldn’t change that for the world.

Have a truly wonderful birthday, my dear! You deserve it more than anyone!
Age might not be your friend, cousin, but I always will be! You can always rely on me for sisterly support no matter how old you get!

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