The girl group will reform along with 5ive, Liberty X and 911 for The Big Reunion, according to The Sun.
The show will follow the reunited bands as they rehearse for two weeks ahead of a comeback performance.
"We are thrilled to bring the stories of these pop groups up to date," said ITV's head of digital channels Angela Jain.
"A lot has happened in the time these bands have been apart - marriages, divorces and changes in careers - and who knows quite what will happen when they reunite!"
Other acts tipped to come back together for The Big Reunion include B*Witched and the Honeyz.
