You've turned into the prettiest girl, I've ever seen
My little tomboy now wears satins and lace
From now on you're gonna be mine, so
Tra la la la la la la la la
When you were thirteen, you were my funny valentine
You've turned into the prettiest girl, I've ever seen
Tra la la la la la la la la
Tra la la la la la la la la
If I should smile with sweet surprise
I can't believe my eyes, you're just a teenage dream
Happy birthday, sweet sixteen
When you were only six, I was your big brother
Happy birthday, sweet sixteen
Happy birthday, sweet sixteen
Happy birthday, sweet sixteen
It's just that you've grown up before my very eyes
If I should smile with sweet surprise
Happy birthday, sweet sixteen
You've turned into the prettiest girl, I've ever seen
Then when you were ten, we didn't like each other
Tra la la la la la la la la
But since you've grown up, your future is sewn up
Happy birthday, sweet sixteen
What happened to that funny face
It's just that you've grown up before my very eyes
Happy birthday, sweet sixteen
Tonight's the night I've waited for
Because you're not a baby anymore
