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 My little tomboy Now wears satin and lace I can't believe my eyes You're just a teenage dream Happy Birthday sweet sixteen When you were only six You had a big brother Then when you were ten You 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 fine So 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 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 Happy Birthday sweet sixteen Sha la la la la la la la la Happy Birthday sweet sixteen Sha la la la la la la la la Happy Birthday sweet sixteen Sha la la la la la la la la Happy Birthday sweet sixteen Sha la la la la la la la la Happy Birthday sweet sixteen