90+ Heartfelt Birthday Wishes for Your Sister-in-Law


I know how old you are, but don’t worry, your secret is safe with me. You look at least half your age. Have a wonderful birthday, sis in law!
We don’t need a piece of paper
to tell us that we’re sisters-in-law
because deep down in my heart,
you’re the truest of sisters to me.

Happy birthday, my dear. 
My wish to have a sister has come true, for now I have you. So I wish all your wishes may come true on your birthday, dear sis-in-law!
My lovely sis in law is celebrating another birthday, and each year she gets better and better! Have a wonderful day, full of joy, love and beautiful surprises. Love you, sis!
You aren’t simply a wonderful friend and sister-in-law to me, you’re my true sister at heart. I am so grateful to have you in my life.

Happy birthday.
Happy birthday to my brother-in-law
who just so happens to have the
world’s best sister-in-law!

Have an awesome day today, bro!
Growing up I always wanted a sister. A best friend for life and someone I could share my deepest thoughts with. I asked God many times to bless me with a sister, but the message must have been lost somewhere along the way since I only got a brother.

The years went by and this wish completely vanished from my mind. But one happy day my brother found for himself a wonderful wife, a beautiful person, who, with time, would be a sister to me.

To my sister-in-law, my dear sister, the sister I always wished for, I wish the most amazing of birthdays!

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