Legendary TV personality Sir David Frost was close enough with Princess Diana to have her be his son's godmother. So during his appearance on 'Piers Morgan Tonight' (weekdays, 9 PM ET on CNN) he was asked what his good friend would have thought about her son's marriage to Kate Middleton.

"I think that she would be thrilled with the choice he's made . . . And I think she would inevitably in the circumstances also -- besides being thrilled -- be filled with the most marvelously irreverent jokes, cause she always was."

Sadly, Frost didn't reveal what any of these jokes would have been.