Happy birthday sister in law wishes. These wishes and messages are perfect for a card or to say in person. I hope your special day today warms your heart just as you’ve warmed mine, sis.

25 Ways to Say Happy Birthday to Your SisterinLaw »

From sentimental to funny, choose one to write in a card. We love you from the bottom of our hearts for all the joy and warmth you have brought. Happy birthday to my kind and loving sister in law who is so much fun to be around!

You shine so bright that even the candles on your cake can’t compete.

May your birthday be as sweet as you are. They can be used in most situations as they are. I’m grateful for all the joy and laughter you bring to our family. We recognize the importance of this. I will always be here for you and to celebrate with you. I don’t know what i would do without you as. Whether you want to wish her a happy birthday with a heartfelt sentiment or simply let her know that you’re thinking. Sweet birthday wishes for sister in law: