This was for me the high spot of the Johnny Depp movie Crybaby.
(Sorry for the low image quality, it was the only version I found. Also, it's cut off, but in the movie it's only a few seconds longer, sadly.)
Funny enough she had another song (in an off-green dress) later, after she "went to the dark side", and I'd guess that one was meant to be the sexy one, but I found the white dress song to way more appealing, and funny enough way naughtier. There is nothing "innocent" about the way she moves!
In 1990, by the way, Johnny Deep was known mainly for his role in 21 Jump Street, and he could see himself "becoming a lunch box, and thereafter just vaporize" (Actors Studio). Both for Johnny and for director John Waters, Crybaby was a way of making fun of that teen idol image, helping Johnny to escape it. Johnny said the film was sent from heaven. He has always since then struggled against becoming a canned product for Hollywood, by for example refusing to become Leading Man in romances.