Good morning! Today is my sisters’ birthday and I wanted to take a minute to let her know how special that she is to me.
She is my best friend, my rock, my sounding board, my should to cry on, my “go to” person to talk about my frustration, happy news or whatever is in between and my companion on many of my favorite adventures.
Cue the music, “Happy Birthday to you, happy birthday to you, happy birthday to youuuu, happy birthday to you!
Happy Birthday! I love you and hope that you have a fabulous day!

We join in to wish happy birthday to your sister. There's nothing better than having close siblings.
It must be great to have a sibling who you love so. Happy birthday to her!
Happy Birthday to her. It's wonderful that you get along with her.