Happy birthday to my younger sister who a lot of people think is actually my elder sister!
I’m sure it’s only because you’re so wise and mature that people think you’re older than me anyway, sis! Either that or I just seem super young and immature!
My dear, I’m wishing you the happiest of birthdays today!
I can’t tell you how grateful I am to have such a great friend in you. You are the nicest, sweetest, and most beautiful person in my life, and you have touched my heart in more ways than you’ll ever know.
I’m sending you some seriously big birthday kisses today!