55+ Birthday Wishes for Sister in Law

Birthdays happen once a year.

They can’t go uncelebrated, especially when it is the special day of your sister-in-law.

She is like your sister from another mother.
A friend and someone you can chat with when it comes to raising your kids or get ideas on how you will surprise your husband to celebrate his latest job promotion.

Why not drop a special greeting and make her smile on her birthday?

Family get-togethers are more fun when you are around. I always look forward to catching up with you, whether it is the latest fashion or just about anything that we are up to lately. Happy bday, sis! May you have a great and fun birthday!

Sisters-in-law are like muffins on a bad day. They make you all warm and fluffy inside, chasing the bad vibes away.


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Wishing you excellent health so we can have more afternoon teas together; more wealth so you can shop for that shoes you have been eyeing for this past few weeks; more love because you deserve it; and more blessings in your life, simply because you are such a wonderful person. A wonderful birthday, sis-in-law!

Not only was I blessed with a great husband, but also with an awesome sister-in-law. Life gave me a fantastic package deal! Best birthday!

Such a wonderful person like you deserves an abundance of happiness, a bouquet full of blessings, a bag full of good health, and a chest full of love. Wonderful bday, my sister-in-law!

Happy Birthday Sister in Law Wishes List

Thank you for looking after my kids when my husband and I are going out on a Friday date night. I couldn’t imagine a world without you in my family. Best wishes to my beautiful sister-in-law. Best bday to you!

Bring out that delicious chocolate cake. Open that sparkling bottle of Pinot Blanc. Let us celebrate your bright and new chapter ahead! Best bday, sister-in-law!

You are like a wildflower in a desert – rare and delicate.

I was wishing you a joyous day, my beloved sister-in-law, as this is your special day.

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Your brother and I would like you to have a great and fruitful life because we both care about you.

I believe that you will have a great day, sister, with that excellent man by your side today.

I would like you to have a great day today, my lovely sister in law and happy life just like your brothers and mine.

You are like a soft breeze on a warm summer day – gentle and calm. Wonderful bday, sister-in-law!

You are like a diamond in a rough – unique and pure.

I am blessed to have met such a lovely and beautiful soul. Best birthday, my dear sister-in-law!

In times of emotional whirlwinds, you are there as my shoulder to cry on. In times of trouble, you are there to back me up. Thank you for not only being my-sister-in law but also a friend that I can always count on. Happy birthday!

Most of the people I know do not get along with their in-laws, but not in my case! Happy bday, sis!


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You have been my child’s second teacher in life. You helped me in raising my kids into the good people that they are now. You have been such a wonderful auntie to them. I have nothing but gratitude and love in my heart for you. Wonderful birthday to the most excellent sister-in-law!

The best decision that my brother has ever made is by having you in his life. You guided, tolerated, and loved him despite all. I will be forever grateful for that. Happy birthday to such a lovely person such as you, my sister-in-law!

When my mind is in trouble, you are there to remind me how strong I am. You steer me gently to the right path of love with your impeccable wisdom. Thank you! Happy bday to the most excellent sister-in-law!

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Brother in Law Birthday Wishes

When I married your brother, life threw in a beautiful gift in the package! That is you, my sister-in-law! Happy birthday! Stay lovely!

Stay bright and pretty like the rays of the morning sun.

Stay kind and gentle, like the wind drifting softly through the meadow. A wonderful birthday, sis-in-law!

Stay calm and robust like the rain after days of drought.

Best birthday, my sister-in-law!

The memories and joy that you have brought to our daughter’s life are priceless. When she grows up, I would want her to be like her auntie – beautiful and strong. Happy birthday, my sister-in-law!


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Life is full of surprises indeed. One of the best and most pleasant surprises that it has given me is you! Wonderful bday, my beautiful sister-in-law!

Not only are you like a sister to me, but you are also a fantastic adviser and best friend. Best bday, sister-in-law!

With the sun shining and birds singing to match the smile on your face, I send my wishes, dear sister-in-law.

Just like your brother made my life full of fun, so is your birthday supposed to be.

happy bday sister in law

I hope this birthday marks the end of the days of us not getting along; best bday sister.

This is to wish my amazing sister-in-law and friend a wonderful bday full of joy and happiness.

My brother is a force to reckon with. He is difficult most of the time and never listens to her sister. But, the times we grew up together nurtured my love for him every day. Now that he has his own family, I could never be any happier that it is with you. He found a wonderful woman to take care of him, and I know that he would not want anything in the world but to be with you. Best birthday! Thank you for being my brother’s reason for happiness.

We are looking forward to more chats over Starbucks with you, more shopping sprees until our feet hurt, and more hair or nail sessions at the salon with you. May we have more dates together in the future! A wonderful birthday, my sister-in-law!


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To the person with so much love and care for all the people in her life, I wish you a journey ahead filled with happiness and hope. Happy bday, my sister-in-law!

I wish you the strength to stand against the challenges that life throws at you, faith and hope to look ahead with optimism in your heart, and happiness to tread the road with beautiful memories in tow. Happy birthday, sister-in-law!

How can someone as pretty and intelligent as you fall for my brother, who is such a hard-headed bloke? Thank you for loving him anyway! Happy bday, my sister-in-law!

You are an incredible blessing not only in my brother’s life but to us, his family as well. We know that he is in good hands, and he will be loved the way he deserves. Thank you, my sister-in-law! Wonderful birthday!

Keep sharing your happiness and love with everyone around you, and having you have brought so many joys in our lives. Happy birthday, my dearest sister-in-law!

happy birthday sister in law

You are like a sister to me, and a friend rolled in one. We share so much about life and how we triumphed over it. I can’t imagine being out of reach with you for so long! Hope to see you soon, my sister-in-law! Wishing you a memorable and wonderful birthday!

Happy birthday sister-in-law, and thanks for being the most amazing person in life.

Best birthday to my sister from the other mother, and thank you for being an essential person in my life, just like your brother.

My wonderful birthday to you, my amazing sister; you are the greatest gift that life gave me after marriage.

It is always true that a wonderful loving husband exists because of a special sister, best bday sister-in-law.

For the times that you adopted me when I was too drunk to get home.; for the times you cooked me one of the best meals I ever had in my life; for being my older sister and my very best friend; For staying by my side through the phase of falling in love and heartbreaks. Thank you! You are the best decision that my brother has ever made in his life. Not only have you changed his life, but mine as well. Best bday to the best sister-in-law in the world!

A sister-in-law is a beautiful addition to any family. Not only do you get an extra sister, but you also have someone to gossip with the latest trend and just about anything! Have a wonderful birthday, my sister-in-law!

Having a sister-in-law made me stronger. I have always thought that I am alone with my struggles as a homemaker. However, I got my sister-in-law, who shares the same experience. I can count on her for advice, while I also do the same for her. You are indeed a gift and a blessing in my life. Wonderful bday to my ever-beautiful sister-in-law!

She is the one you can count on for a recipe. You can also ask her for advice when it comes to relationships. She is bright beyond her age and beautiful inside and out. She is your sister-in-law. The very best on your birthday, my awesome sister-in-law!


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My daughter is lucky to have an auntie she could look up to. I will hear her gush about how good you are at making cookies and how soft your voice is when you are telling her an afternoon story with her cousins. Thank you! You are an excellent addition to the family. Best birthday, my sister-in-law!

It is beautiful to have someone you can count on when there are family barbeques. Someone you can chat with while you do the dishes or fix the aftermath. Thank you for making the get-togethers more fun and less tiring. A wonderful birthday, my sister-in-law!

May the new chapter ahead of your life be filled with joy, good health, wealth, and hope. Cheers to another great year with you! Happy bday, my sister-in-law!

Here is another year of fantastic and memorable encounters; tea parties and double dates, beach parties and recipe exchange, Thanksgiving dinners, and New Year’s countdown. Happy birthday, my sister-in-law! Thank you for adding a touch of happiness to my life.

You deserve happiness and joy on this beautiful day.

Have a lovely day with great memories my caring, and supportive sister-in-law.

I wish you a fantastic birthday that is as substantial as your family’s presence in my life, sister.

My sister-in-law is like a cool older sister that I have always wished for. I can get make-up tricks from her. Ask her about dating and boys. Share with her about my problems and my triumphs. She cooks me meals when I crash at my brother’s house. Her tireless smile is my inspiration. My brother has made the best decision in life by marrying such a wonderful and graceful woman. Happy bday, my sister-in-law! I hope I can become a relaxed and beautiful adult like you one day.

The road ahead may be filled with challenges, but I know that the strength in your heart will get you through it. Happy birthday, my dearest sister-in-law!

I know for sure that life is tough, but I can get through no matter what. My sister-in-law showed me how it is done! Wonderful birthday to one of the most muscular women I know!

My niece and nephew are blessed to have a wonderful mom like you. They can eat your extraordinary cooking every day and take them trips to fantastic places! Of course, I know that you never forget to tag me along. Thank you for not only being my sister-in-law but my older sister as well. Best birthday!

Funny Happy Birthday Sister in Law Quotes

To the best sister-in-law in the entire world that anyone could dream of having, you’re the best, and you do deserve to have a great birthday today. Hoping you enjoy it and can’t wait to celebrate together.

Today is your day, and I hope it is fantastic, the best yet—lots of love to you on this special day.

When I got married, I felt like I won the jackpot by having you as my sister. Happy birthday. I love you so much.

Happy birthday to a sister-in-law who is always there for me when I need her. You mean more than words to me. Love you always.

I hope you feel special today on your birthday because you mean the most to me, and you deserve to feel joy today. Happy birthday.

Do not forget to enjoy your cake. Have the best birthday that you have had yet. I cannot wait to celebrate with you. Love you, happy birthday.

Happy birthday to a sister-in-law who gets me more than I do. You’re the best, love you.

Take lots of pictures and make incredible memories. I hope it is a fantastic day for you; happy birthday.

Have plenty of drinks and dance tonight. I hope you celebrate your day big. Happy birthday to you.

You are a sister in law that genuinely lights up the lives of the people around you. May you have a blessed birthday and many more.

Your birthday, dear sis, is the perfect time to remind you that I love you, and you mean more than words; you are irreplaceable.

May your birthday be filled with much beauty and joy, wishing a happy birthday to you.

Make a wish when you blow out the candles! And here’s to many more! Happy birthday, sis.