The famous telly trio were also joined by their respective partners, Ali Astall, Dan Baldwin and Stephanie Schofield for a snap Phil posted on Instagram.
However, there was no sign of Dec’s usual right-hand man Ant McPartlin, or his new girlfriend Anne Marie Corbett.
Holly stepped in to host I’m A Celebrity alongside Dec last year, after Ant took a year out of the spotlight following his conviction for drink driving to work on his personal problems.
Ant is expected to rejoin Dec in the jungle in November, having staged his TV return earlier this year on Britain’s Got Talent.
Holly and Phil are currently on a seven-week break from their hosting duties on This Morning, and far from taking some time out from each other, they have been spending large amounts of their on-screen break together.
Earlier this year, they were the subject of tabloid reports there had been a fallout between them behind the scenes of the ITV daytime show, over a Sunday Times Magazine cover.
Phil was reported to be angered that the cover heaped praise on Holly with little mention of him.
However, Holly soon downplayed the reports by posting a Father’s Day tribute to Phil on Instagram.