Thinking on this more, this entire story of Marilyn and Kennedy sounds like a hollywood script.
It is a story to tell the deplorables.
If you listen to stories of parties with top athletes or really rich executives, it is about women, often wearing nothing, or next to nothing, who are all down to fuck.
The wealthy have women throwing themselves at them all the time. Often literally. Read some of the writings by chip-n-dale dancers.
So, this story above, about a dress falling apart, etc, is only a story for us plebs. Nothing like that happened.