Stars from Strictly Come Dancing, X Factor and yes, even Heartstopper will be putting in an appearance, according to The Sun.
Things soured between Fern and her former co-host after she stepped down from the ITV daytime show in 2009.
“Just had the loveliest catch up... Shooting the breeze," Fern tweeted.
"I only wish I was the sort of person who could have persevered through that, but I couldn’t."
Phil previously admitted he had "tried over the years to make it right" with his former co-host and missed her "deeply".