It’s no wonder people mistake us for siblings rather than cousins because I too sometimes forget that you are my cousin as you’re so much more like a sister to me!
Happy birthday, my dear! I hope your special day is as special as you are to me!
My dear big sister, how is it that with each birthday you get another year older, yet you never seem to age a day! I hope that trait runs in our genes!
I’m wishing you an amazing and beautiful birthday today, sis!
You might want to forget about your birthday but I never could! I’ll take any opportunity to remind you that you’re getting older, my friend! Happy birthday!
You might finally be growing up and catching me up, little bro, but you’ll still always be younger than me! In my eyes, you’ll forever be my baby brother!
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!