You are not only my sister-in-law but also my best friend given to me by nature.
Happy birthday brother-in-law. We are blessed to have you as our family member.
My dear, I guess you know that it is all downhill from here onwards?! But happy birthday all the same!
My brother has done a lot of crazy things in his life, but the moment he brought an amazing person like you into this family, all his ‘sins’ were forgiven.
Wishing my amazing sister-in-law an amazing birthday celebration. I swear I didn’t need Facebook to remind me of your birthday!
Dear sister-in-law, as you blow the candles on your birthday cake, take note of the fact that I love you more than Queen Elizabeth II loves to wear gloves.
On this day, I want to congratulate you on turning a new age and surviving another year of my brother. Keep it up!
In the world of sisters-in-law, you would certainly win a Nobel Prize because you are such an awesome individual! Have a wonderful birthday celebration.
I am so lucky to have my best friend in my sister-in-law. I couldn’t have asked for a better sister-in-law.
Ain’t no sister-in-law like the one God has blessed me with. May the Heavens bless and protect you wherever you go.
No treasure on earth can compare to the fact that I have a wonderful sister-in-law like you in my life. Thank you for always being there for me.
I hope that the Heavens look down upon you today and bless you abundantly. Have a fabulous life filled with happiness and tranquility, my dear.
Wishing the world’s most amazing sister-in-law an astonishingly merry birthday. I pray that you keep on making phenomenal strides in life.
Dear sister-in-law, your birthday will always be a special day to me since it is the day you came into this world to bring happiness to our family.
On your special day, I wish you a life full of joy, tranquility and prosperity.
I wish you a happy, successful and prosperous year ahead because you are such a special sister-in-law. I hope your birthday turns out to be a very memorable event.
Happy birthday to my phenomenal sister-in-law. May your birthday bring you as much happiness and joy as you bring into the lives of others. God bless you.
Today is your special day, my dear! May your dreams that are yet to materialize start materializing from this remarkable day.
To the most stunning sister-in-law on earth, I say thank you for being the wonderful person you are. I wish you a marvelous 30th birthday celebration.