Yvonne had a last name: DeCarlo. Correct: that’s Lily Munster! She also had a career as a singer; here she is in a song featured in the Diner, taken from her now-unavailable 1957 album. Orchestra conducted . . . by John Williams. Yes, that John Williams. He was 25. He's currently at work on the fourth Indiana Jones score.
There's half a century between these pictures and today.