N.B. Don't immediately assume you know who or what I'm talking about (except in the obvious ones like parents or siblings. I like the mystery that is my own personal brain)Day 4 - Your SiblingDear Sibling
Well as I'm sure you're both aware, I happen to have two siblings, and I don't think it's fair that I only focus on one of you, so I hope that you don't mind sharing this letter.
You've grown up to be a person I actually like. Obviously, as younger siblings tend to do, you drove me crazy for a few years there, but you're maturing quite well. Thank you for the fun times and for growing up well. Thank you for your hilarious sense of humour and for understanding mine. Thank you for doing what I ask you to do, most of the time. Thank you for the thought you always put into my presents, you really are a unique sibling. Thank you for the fun and crazy times that we have together and for everything that you have done for me.
You're still my baby, and probably always will be whether you like it or not. I was so incredibly happy when you were born, even if you were the wrong gender. Thank you for being so unbelievably adorable and lovely. Thank you for being so much fun to play with and always making me smile. Thank you for the amazing little boy that you're growing into. Thank you for your cuddles and kisses and little phrases. Thank you for being my little brother and trusting that as your big sister, I will look after you.
Sincerely, Eleanor
Until next time fellow humans....

I'm the bestest big sister =P