Prince William still ‘cringing’ from his live duet with Taylor Swift and Jon Bon Jovi

Prince William says he was “in a trance” when Taylor Swift got him up on stage to sing with her and Jon Bon Jovi at a charity gala.

The 39-year-old royal has recalled how the ‘Shake It Off’ hitmaker, 31, managed to get him to join her and the 59-year-old rock legend to perform Bon…