You’re another year older and more beautiful than ever, little sister! Happy birthday to you!
Just a word of wisdom from your dear elder sister, keep hold of your beauty and cherish it for as long as you can because once you get to my age those good looks won’t stay around for long!
You were such a bratty little sister, always trying to take my things and tag along everywhere I went. Things had to be done your way or you would throw a tantrum.
Despite this, I want you to know that I love you to bits.
Whenever I feel weak or down, I go to you to regain strength. You are my support and source of inspiration. It should be the other way around, but you are wise beyond your years. I’ve always looked up to you.
I was going to make a joke about how you’re getting older, but that immediately backfires as I’m always going to be older than you! At least we can make fun of each other as we grow old together!