London (ANI): Britney Spears will cancel her Circus world tour unless her children can accompany her, according to reports. Apparently, the comeback queen is concerned over where tots Sean Preston and Jayden James will live while their mother is on the road. Therefore, the queen of pop is on the verge of pulling the entire 44-date run, a number of Web sites claim.

The tour was due to start on March 3 in New Orleans before taking in a further 35 shows across America. The European leg of the jaunt was to have taken place at The O2 in London with 8 dates kicking off on June 6, reports the Sun. According to TMZ.com, an agreement had been made between Britney's ex husband Kevin Federline, herself and her father Jamie that would allow the kids to tour with her mother.

Britney would have homes in three bases – New Jersey, New Orleans and Los Angeles, which her tots would stay at and from where she could essentially commute to her concerts. But, the site claims, that when K-Fed's lawyers learned about the proposal they protested it and have refused to specify why, leaving the entire tour in jeopardy. After shows in North America, Britney was set to perform eight concerts in London, England in June.