A very happy 18th birthday to you and a warm welcome to adulthood, my dear!
I am so proud of you and the wonderful woman you’ve become, and even though you truly are a grown-up now, to me, you will always be my sweet little niece.
Happy birthday to my gorgeous niece and many congratulations to her wonderful, loving parents!
You’re surrounded by so much love and warmth, and I’m sending all of mine and my best wishes to you today as we celebrate the most precious girl in the family!
Today we are celebrating the birthday of a bright, beautiful and fascinatingly smart young lady. My dear niece, I wish you the absolute best birthday possible.
I want you to know that you can always count on me as if you were my own daughter. You are so very precious to me, and I couldn’t imagine my life without you ever being in it.
Enjoy today and the many exciting years to come. You have such a bright future ahead of you and I truly believe that you’ll become anything that your heart desires!
The day you were born will always remain one of the most memorable and special days of my life, which is why your birthday each year is so important as it is a celebration of that miraculous day!
My dear niece, you know just how very special you are to me and that you’ve always been my pride and joy, which is why today is such a momentous day not only for you but for me too.
Your 18th birthday today is a celebration of the wonderful woman you have grown to be, and all of your fabulous accomplishments along the way.