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


My sweet cousin, you’re as dear 
and meaningful to me as any sister
and just as annoying as one, too!

May you have a fabulous birthday!
A cheeky cousin and a true sister
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!
Sure, getting lots of gifts on your birthday
is nice but no gift will ever be as great as
simply having a wonderful cousin like me!

Happy birthday, girl!
Wishing a happy birthday to a sister-
like friend and person like no other:
my dearest cousin!

Have a fabulous day, my lovely!
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!
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!
Officially you’re my cousin, but my heart
says you’re my sister. Luckily for you, I
always listen to my heart!

Happy birthday to you, my dear. I
hope you have a truly wonderful time
celebrating your special day today!
A cousin on paper
A sister at heart
I could never cope
If we were ever apart!

Wishing you the happiest
Birthday possible, my dear!
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!
Happy birthday, my dear cousin! Congratulations on still maintaining your youthful looks despite the many, many, many years that are against you!
You are so very special to me, my dear cousin, and it’s no secret that I have always been very protective of you as I have always seen you as more of a little sister rather than a cousin.

When we were kids I’d only want the best for you, and I knew then that you too would always have my back.

It’s such a joy to see that now you’re getting older, you are developing into this incredible and beautiful person!

Happy birthday, my dear, and I hope that today brings you all the happiness in the world, which you so very deserve!
It’s no wonder people mistake us for
siblings rather than cousins because I too
sometimes forget that you are my cousin
as you’re so much more like a sister to me!

Happy birthday, my dear! I hope your
special day is as special as you are to me!
Take a really deep breath, cousin, because you’re going to need all the air in your lungs to blow out so many candles today!

Happy birthday to you, my dear!
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!

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