There is only one rule at the age of eighteen! There are no rules! Happy Birthday!

I am officially allowed to allow you to do the things your parents have not allowed you to. Happy birthday.

No one can measure my love for you and it’s not even possible for Google or Wikipedia. Happy birthday.

You have the gift of making others happy. Today, we wish that same happiness for you! Happy Birthday, Niece!

A golden era for your life starts from now on. Happy 18th birthday and keep your smile on!

To my beloved niece Happy birthday and lots of joy and happiness.

Dearest niece, may your birthday mark the beginning of a prosperous year filled with promising opportunities and success.

You are my NIECE; Naughty, Impatient, Energetic, Cute and Expressive. I love you, happy birthday.

Welcome to the world of adults. It’s a crazy world, full of sinners and saints. You’ll fit right in.

I hope you have a happy birthday and can always be there to celebrate with you. Happy Birthday!

May your life be filled with sunshine and warmth. Happy Birthday!

Happy birthday. At your age, you should really live LARGE…starting with LARGE print.

Happy birthday! Considering all the candles on your cake, I hope you remembered to top up your fire insurance.

A very happy birthday to the person who stands by my side whenever I need someone in a tumultuous time.

Happy Birthday to you! Have a great day today, and may all your wishes come true.

Wishing you a fantastic birthday filled with wonderful memories and sweet moments to cherish always. Happy Birthday!

You’re so different from others. Wishing you never mix up with them!

Happy Birthday to a person that’s charming, talented and witty, and reminds me a lot of myself.