Happy birthday to my sister in law. May your day be filled with fun, your gifts be plenty and may all your wishes come true in the year ahead. Happy birthday to the best sister in law ever! A loving heart, a caring nature and sweet soul. I wish you a very happy birthday. Our friendship has grown so much over the years. On September 5, my sister and her husband will celebrate their 50th wedding anniversary. Mr. & Mrs., first names, etc.) Create a photo album or a video for your parents to celebrate this special day. Nobody does it better than you.