You may well be my stepsister, but you mean more than just that to me. Our bond runs deeper and that’s why you’ll always be my soul sister. Happy birthday.
My beloved twins, there is no other brother and sister quite like you both. You make everyone happy just by being with you. May you have a great birthday!
I wish for the loveliest things to bless your life each day, my dear sister, but I’m wishing just that little bit more so for you today! Happy birthday!