Girls Aloud will now be touring alone
The rival Popstars bands have insisted their careers are not in jeopardy, despite their tour being cancelled due to poor ticket sales.
The groups, manufactured by the ITV1 show Popstars: The Rivals, had been expected to perform 11 shows together in venues nationwide.
Boy band One True Voice were said to be "disappointed and upset" by the news but determined to press ahead with their next single.
A statement issued by Girls Aloud's record label said: "Girls Aloud are disappointed the Popstars - The Rivals tour has been cancelled.
"Sarah, Nadine, Kimberley, Nicola and Cheryl were looking forward to
performing in front of the fans that had made them number one for three weeks."
One True Voice were created by Popstars: The Rivals
The girls are due to release a new single No Good Advice in May and an album will follow.
Girls Aloud manager Louis Walsh blamed poor ticket sales on One True Voice.
Walsh, who took Girls Aloud to the Christmas number one spot with Sound of the Underground, said the girls would now be going it alone with a tour of their own later in the year.
"Being associated with One True Voice was not doing them any favours," he said.
"They were meant to be touring with One True Voice and the others from the programme but it wasn't selling, nobody was buying tickets.
"Girls Aloud are doing brilliantly and they don't need to be supported by anyone else."
The tour had been scheduled to start in March, taking in major venues including London's Wembley Arena and Birmingham NEC.
One True Voice, who are managed by pop stalwart Pete Waterman, reached number two at Christmas with their single Sacred Trust.
But they were soundly beaten in terms of sales by Girls Aloud, who stayed at number one for four weeks.
Girls Aloud also made headlines when 19-year-old singer Cheryl Tweedy was arrested after being accused of assaulting a nightclub toilet attendant.
She was released without charge on police bail.
Gennaro Castaldo, of music retailer HMV, said the tour had been called very soon after Popstars: The Rivals was broadcast.
"I think the problem is with live performances you are assuming that people who want to go and see them are dedicated followers where loyalty has been built up over a number of years."
He added that he believed that the success of tours by Pop Idol winner Will Young and runner up Gareth Gates probably represented the "zenith" of the reality talent show phenomenon.
Young and Gates became hugely successful in the UK after featuring on the ITV show Pop Idol.