A beautiful collection of wedding anniversary message samples to sister in law is listed below:
1). I find a beautiful friend in you who bind the family in one string of love. Welcoming you into our family brings happiness in our heart and spreads love all around its corner. Wish you a very happy anniversary.
2). The special day is for you and my brother; the day witnesses your union and being together. You share the joy of life and pain with each other and you together look just perfect as a couple forever. I wish you both stay together always. Happy anniversary.
3). To my dearest sister in law, you give my brother an awesome company, not for today, but for the lifetime. You two experienced many highs and lows together, but never make each other feel alone, not for a second. You deserve the happiness today. Happy anniversary.
4). Thanks to my dear brother for giving me such a lovely friend like you. It seems when you came into his life, it took the meaning of perfection. You together made so many beautiful memories in the past, but a great future is waiting ahead.
5). I wish you many happy returns of this day; it is a pleasure of my eye seeing you together and sharing joy and love with each other. Be together always, no matter what comes in your life. Enjoy your life and keep your love young forever.
6). Some couples are just made for each other, but you are the couple who mad for each other. The Love you share today, I wish it stays always in your life. Life is a long journey and be happy always in your life. I wish you a very happy anniversary.