My Three Sons

Season 4, Episode 27

Episode Title: What's the Princess Really Like?

Air Date: 1964-03-19

Overview:

Steve's high school sweetheart returns to town as a real-life Princess, complete with entourage and the Douglases are invited to a posh royal reception in her honor. However, Chip puts the wrong reply in his response and must try and retrieve it before the Princess reads it.