Sister's birthday is the warmest sentence.

The warmest words for sisters' birthdays are as follows:

1. On this happy day, I sincerely wish you eternal youth and wish you a peaceful and happy life. Happy birthday!

2. May the hand of friendship get tighter and tighter, and the connected hearts get closer and closer! My best friend, send my sincere birthday wishes!

3, all happiness, all happiness, all warmth, all good luck will always be around you! Happy birthday!

I am waiting quietly, waiting for the bell to ring. At this moment when thousands of people pray for blessings, may your most brilliant dream come true.

Let me bless you and laugh for you, because on your birthday, my heart is as happy as yours. I wish you happiness!

I give you my special blessing. May it bring you health, good luck and happiness every minute. I hope this is the best birthday you have ever had!

7. May blessings linger in your dream of always approaching spring. I wish you all the wishes and happiness! Happy birthday!

8. I think health and happiness are the two most important things in life. If they are transferable, I'd like to give mine to you. Happy birthday.