Sisters are a special kind of blessing. 

They’re the ones who have your back. The ones you can call in the middle of the night and they will show up on your doorstep with a shovel and some tarp, no questions asked.

So, when it comes to their special day, it makes sense to honour them in the best possible way.

But not all sisters are made equal, and neither are the Happy Birthday sister messages we wish to send to them.

Here we’ve collected some of the best sister birthday wishes and quotes to help you send that special message that will have her reaching for the birthday card time and time again, just to read your words. 

There’s no love like the love of a sister who also turns out to be your best friend. The one that will back you to the hilt and go down the ship. 

These are the sisters we talk to about everything and nothing and couldn’t imagine our lives without.

Happy birthday Sis! No one can compare to you. Thank you for always being there, my best friend, my sister.   

“But the love of sisters needs no words. It does not depend on memories, or mementos, or proof. It runs as deep as a heartbeat. It is as ever-present as a pulse.” — Lisa Wingate

In the cookies of life, sisters are the chocolate chips. – Unknown 

“Sisters make the best friends in the world” – Marilyn Monroe 

“It’s not what we have in life, but who we have in our life that matters. Happiest birthday to my partner-in-crime sister. I love you!” 

Sisters by chance, friends by choice.

“Sister, you were the first best friend of my life, and you’ll remain my BFF. Wishing you a happy birthday.” 

“Sisters like you are diamonds. They sparkle, they are priceless, and they are truly a woman’s best friend. Happy birthday, to my big sis.”

Sisters help make the hard times easier and the easy times more fun.

Often the oldest, although not always. They were the ones who helped you with your homework, took you to the park and pretended not to hear you when you asked to be pushed on the swings for the fortieth time. 

These are the sisters who painstakingly put you first and championed you when no one else would.

“I know my sister like I know my own mind. You will never find anyone as trusting or as kind…I love my sister more than anything in this life. I will choose her happiness over mine every time” – Hamilton 

“My sister…is the person who keeps me in line, whether I like it or not. I trust her and also have a good, healthy fear of her.” – Katy Perry 

“I’m the big sister. I want to make sure she has everything, even if I don’t have anything. It’s hard. I love her too much. That’s what counts” – Venus Williams 

My life would not be complete without you in it, my sister. No matter what is going on you are always there and always willing to help. Thank you. Wishing you a happy birthday and many more to come. 

“Don’t talk about my sister; don’t play with me about my sister. If you do, you’ll see another side of me.” – Beyoncé 

“If you don’t annoy your big sister for no good reason from time to time, she thinks you don’t love her anymore.” —Pearl Cleage 

A sister is the one who no matter what, is always there. You, my sister, have lived that each and every year of your life. You encouraged and supported me when challenges overcame me. So, on this birthday I just wanted to say thank you. I appreciate and love you more than you will ever know.

Life is good with a sister like you to journey through it with. 

“Thank you for always encouraging me to go after my dreams. I hope this year every wish of yours comes true because you deserve so much happiness in life. Happy birthday Sis!” 

Happy Birthday, my dearest sister. You are such a sweetheart! I love you so much. I promise to keep all your secrets, to flood you with gifts and never to miss a chance to make you smile.

All relationships take work including those with our sisters. 

Sometimes no matter how hard we try we can’t seem to find common ground, but we love them all the same and their birthday is a perfect opportunity to heal some wounds with a beautiful quote or message.  

A sister is both your mirror and your opposite – Elisabeth Fishel 

"Sister is probably the most competitive relationship within the family, but once the sisters are grown, it becomes the strongest relationship." – Margaret Mead 

A sister can be seen as someone who is both ourselves and very much not ourselves – a special kind of double.” – Toni Morrison 

“Sisters tend to be each other’s biggest champion and also their harshest critics.” — Erin Foster 

I am proud to call you my sister. For all your accomplishments, for all your talents and above all because you are my sister. 

One of the best things about being an adult is the realisation that you can share with your sister and still have plenty for yourself. – Betsy Cohen

Sometimes we don’t get to spend as much time with our sisters as we’d like. 

Times have changed and we often don’t stay in the same town we grew up in. So, for all those sisters that we don’t see as often but think of all the same.

“Even though we are miles apart this year for your birthday, you will always be in my thoughts. You are a marvellous sister, and I am sending all my love your way. Happy birthday little sister!”

A sister is a little bit of childhood that can never be lost – unknown

“Don’t forget our Zoom party this afternoon! The distance can’t stop us from celebrating.”

Hey sister, happy birthday! A special day like this deserves a special card. I know we are not always together, but my heart always considers you close. Thank God for bringing you into my life, you are the greatest gift.

If I had the money, I would hire a plane to fly into the sky and write in the clouds, ‘Happy Birthday Sister’. But since I’m broke, I won’t, but it’s the thought that counts. So Happy Birthday.

It’s that time of the year again, dear sister. I just wanted to let you know how much I miss you. I would be celebrating my birthday with you, but even though many miles are between us, our hearts will always be near each other.

Happy birthday, beautiful sister! I am far away from you, but it doesn’t stop me from wishing you an amazing day. May every day of your life be special.

Not all sisters are biological. Every now and then we come across a diamond who is a sister from another mother like a sister-in-law or best friend. 

But this doesn’t make them any less important. Quite often this makes them more so. So, here’s a list of wishes and quotes for the sisters we choose for ourselves.

“Some hearts just understand each other upon meeting.” – N R Hart 

Treasures are always hidden, gold is always mined, yet my sister shows up effortlessly whenever I need someone by my side. 

She smiles at me reassuringly and says, ‘bestie, we’re going to make it!’ Makes me love her more.

If we can’t be biological sisters, we can at least be unbiological sisters for life! 

To the only one who can read my thoughts and moods without glasses, happy birthday. 

“Though the three of them were unrelated by blood, they were sisters all the same. In the heart, where it mattered.” – Charles De Lint 

A woman without her soul sister is like a bird without her wings. 

“Family need not only consist of merely those with whom we share blood, but also for whom we’d give blood.” – Charles Dickens

Come on, we all either have one, or know of one. And if you don’t, then I hate to break it to you, but you’re probably it. 

These are the ones that tease us, that keep us on our toes and remind everyone about that terrible haircut back in the early nineties. 

“What are sisters for if not to point out the things the rest of the world is too polite to mention.” ― Claire Cook 

“If you don’t understand how a woman could both love her sister dearly and want to wring her neck at the same time, then you were probably an only child.” —Linda Sunshine 

Sister, you were the one I always told on, now you’re the friend I always lean on.” – Catherine Pulsifer 

I suppose there are sisters that don’t compete. I have never met one! – Lisa Grunwald 

When you don’t know what to do, ask your sister, she will be truthful with you when no-one else will. 

Little sisters – the only person in the world you can blame for things you did and get away with it. 

If you trip and fall in life, I will be there to help you up – after I stop laughing. 

When you have a sister, you never truly forget the past. If you do, she’ll be happy to remind you of all your stupid mistakes.

Lastly, for the ones who prefer the lighter side of life. The ones that were always cracking jokes, mainly at our expense. 

Time to get your own back with a selection of the best in sisterly takedowns that we could find. 

Hooray, it’s your birthday! Probably the only thing that we didn’t have to share as kids! Today it’s all about you – have fun and enjoy your special day!

I told mom when we found you in the woods that if we brought you home, fed, and treated you right, you would grow up to be a great person, and as usual, I was right.

One more step closer to Alzheimer‘s, sis? Don‘t worry! Sometimes it’s good not to remember things you don’t want to. Happy Birthday.

I know you would have been so happy if I said, “you are ageing beautifully”. But sadly. lying is not one of my best qualities. Happy Birthday!

Having a sister is like being blessed with two of everything. Two closets, two sets of makeup, and two hearts that are always connected. Thanks for always sharing your things with me even when you didn’t want to.

Congratulations on another new wrinkle on your baby face, sister! You still look pretty, no matter how old you are. And I’m not sarcastic at all.

A big sister is always older no matter how many birthdays you have – Catherine Pulsifer

For more funny birthday sister quotes click here

There are so many things we could say to honour these wonderful women in our lives, and this is by no means an exhaustive list. 

But no matter what type of sister you have, if she is there, then you are truly blessed. If she has passed, light a candle, and say a heart touching prayer. 

And if you still live with her, make sure you put that lipstick back, because she will notice. 

Check out our utterly splendid range of funny sister birthday cards here

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