During a link on This Morning, co-host Phillip Schofield was trying to retain an air of mystery but Holly managed to put her foot in it
The bubbly blonde presenter got so excited about the latest stars to be linked to the Channel 5 show she blurted out the answer instead of keeping it secret.
Her co-host Phillip looked totally dismayed at his pal after trying to retain an air of mystery about the news until after the break when showbiz host Ferne McCann would reveal all the details.
"Which Gogglebox stars are allegedly set to enter the Celebrity Big Brother house?" he began before Holly rudely interrupted.
ITV
ITV
A frustrated Phil laughed as he told his couchmate: "Yes but you're not supposed to say! It wasn't a question for you!"
Read more: Holly Willoughby causes panic on This Morning
Holly jokingly moaned: "Oh but why can't I play?!"
PA
According to reports the popular duo have been offered a big money cheque to ditch the Channel 4 show so they can appear, but that means they may have to say goodbye to Gogglebox.
Read more: Gogglebox's Scarlett Moffatt wants surgery to have her boobs made smaller
"Everyone’s really excited at the prospect because they are so dynamic and they already know they make great TV. They're fan favourites and their dry humour is bound to be hilarious in the house."
This isn't the first time producers have looked to the Channel 4 show for potential housemates. In 2014, they famously recruited George Gilbey, who went on to finish up in fourth place.
* This Morning is on weekdays, ITV at 10.30am