Have a stylish and fun day.
What can life be without a younger sister? Consider all of the nice things your sister has done for you to come up with a birthday message.
Some things are unavoidable in life: like growing older and being my sister.
Have the best Birthday ever! Thank you for always being there for me and for making every day so enjoyable! Your smile is enough to brighten up my day, keep smiling.
May you reach the zenith of success so that the only time you look back is to see how far you have come.
How can I make you feel more special? I wish that everyone could have a sister as terrific as you.