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