Amanda Holden will have a prank played on her by Ant and Dec on 'Saturday Night Takeaway'.

Amanda Holden

Amanda Holden

The popular entertainment show will return to ITV on Saturday (24.02.18) for its 99th episode, and the Geordie duo - full names Ant McPartlin and Declan Donnelly - are set to cause "havoc" on set as they perform a "hidden camera" stunt on the 'Britain's Got Talent Judge'.

However, they are said to be nervous about the prank as they are close friends with the 47-year-old beauty and worry she'll suss them out.

A source told the Daily Star newspaper: "They wreaked havoc on set. Amanda had no idea what was going on. It's the boys' most nervewracking hidden camera prank in the show's history.

"Since they know her so well, they were worried about being found out."

Meanwhile, it was recently revealed that the show is losing Little Ant and Dec.

The miniature version of the pair have decided to leave the variety programme as Little Ant (Neil Overend) is moving to secondary school and Little Dec (Haydn Reid) needs to take on his SATs next year and feel they have now "outgrown" the roles.

ITV told Digital Spy that there are no plans to replace the pair but they are pleased the little ones went out on a high last year due to their Walt Disney World finale.

Neil and Hadyn have held the roles for five years after they took over from James Pallister and Dylan McKenna-Redshaw, who played the parts for 10 years, in 2013.

Although the show is losing the little stars, it was confirmed this week that Scarlett Moffatt will return for the new series alongside the hosts.

The first episode will see Australian pop superstar Kylie Minogue perform, with Paloma Faith and George Ezra due to perform in coming weeks.

The former 'Gogglebox' star said: "Kylie Minogue is performing on the first show. It's going to be fun! It's like a big family at ITV, with Ant and Dec and Stephen Mulhern, hair and make-up - everyone. Every week I learn something new. Anything can happen on live TV so you just take it as it comes. It's like university for TV!"