A weepy Princess Diana told Panorama that ‘there were three of us in this marriage’ with Prince Charles. Who was number 3?

Question: A weepy Princess Diana told Panorama that ‘there were three of us in this marriage’ with Prince Charles. Who was number 3?

Choices:

Camilla Parker-Bowles
Victoria Adams Beckham
Pippa Middleton
Sarah Ferguson

Correct answer:

Camilla Parker-Bowles