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

An aunt-niece duo like us can give any mother-daughter pair a run for their money. Happy birthday.

I never thought that my sister would do great things in life… until she gave birth to an angel who I lovingly call my NIECE. Happy birthday.

Happy birthday to my beloved niece. I hope you have a special day today- you deserve it!

On your birthday, I wish the very best to my darling niece.

With every bit of my heart, I am wishing a happy birthday to the sweetest and cutest niece in the whole world. Happy 18th 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!

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.

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

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.