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!
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!
Happy birthday, sis! I am without a doubt one of the luckiest human beings to have a wonderful elder sibling such as you!
I just want you to know, on your special day, how incredibly much I appreciate everything you’ve done for me over the years! You've been the perfect big sister and so much more!
Today’s a wonderful and very important day as it’s our birthday, my dear sister!
Some twins grow apart as they get older, but I am so thankful that we only seem to become closer, sis. I’ll always cherish the very special bond that we’ve been gifted with.