The presenter, 40, is now happily married to Spencer Matthews, with the couple expecting their fourth child together, but she was previously wed to Westlife singer Brian from 2012 to 2017.
Instead of greeting his fellow MIC alumnus, however, Spencer walked straight past her to speak to the BBC's Anita Rani , who interviewed him two years ago for a documentary.
Pippa first struck up a romance with rich hedge fund manager James Matthews in late 2015 - whose brother Spencer Matthews began dating Irish model Vogue Williams in January 2017.