An amazing classmate and dear girl like you deserves the very best birthday celebrations possible. I hope that’s exactly what you receive on your special day today.
I’m sending you my best wishes for a wonderful year to come.
As my younger brother you might get to make fun of me for being older than you, but just remember that every year my cake will always be bigger than yours because it needs to hold more candles!
Officially you’re my sibling’s daughter but in my heart, you’re my daughter too! I have so much love for you and you will always be so much more than just a niece to me!
I’m sending lots of love your way on your special day today, my dear!