I want to welcome you into adulthood. You're too old to hang out with your parents, but not too old to still let them make your bed! Happy 18th birthday!
Happy birthday to the best sister in the world! You’ve always meant a lot to me and, in you, I know that I’ll always have a best friend and someone I can count on.
Your birthday is just another excuse for me to show my appreciation for you!
You certainly live up to the expectation of being a great little companion, and that’s exactly why I’m going to spoil you with lots of treats today! It’s only what my best friend deserves!