I wish you fortune, treasure, and wealth this year for your big day, Sister-in-Law. You may have noticed a common theme with this wish, but I promise that it’s for a good reason. I really, really need you to buy my brother some common sense this year! Just kidding, and happy birthday!

You are such an unselfish, compassionate, and loving person, Sister-in-Law. Honestly, I’m not sure how my brother landed such a catch! But I am glad he did because it enabled us to become such good friends. May your birthday be full of many amazing memories.

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

I’m beyond excited that I married your brother because having a sister has always been a dream of mine. May your birthday be full of excitement but your life full of tranquility.

When I was a kid, I always complained about the fact that I didn’t get to have a sister. But now that you are a part of my family, I have found the sister I always wanted in you. Thank you.

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

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

Having a sister-in-law made me stronger. I have always thought that I am alone with my struggles as a home maker. 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!

A good husband is amazing of course, but a good sister-in-law is the icing on the cake. Thank you for being such a thoughtful and kind person. May your presents be covered in bows, your cake covered in icing, and your soul covered in love.

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

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

Wonderful bday to you my amazing sister, you are the greatest gift that life gave to me after marriage.

Thank goodness you married my brother, because now you can take over the job of spoiling your nieces and nephews. He does a great job, but I know that you are going to be even better at it because I’ve experienced being spoiled rotten by you first-hand!