Tulisa Contostavlos fails to regroup N-Dubz

London: Singer Tulisa Contostavlos reportedly wants to bring together her N-Dubz band once again but other two members Fazer and Dappy have rejected the idea. Contostavlos, 24, is currently seen as judge on reality show "The X Factor" and knows she will be a bigger name with the band coming together rather than struggling with a solo career. "Tulisa thinks N-Dubz would be bigger than ever following her exposure on `The X Factor` but her old band mates just aren`t interested. Dappy and Fazer want to continue doing their own thing," dailymail.co.uk quoted a source as saying. "They know Tulisa`s solo career isn`t going great and she`s realised she`s bigger as part of N-Dubz than on her own. Her record company are nervous after her last single and fear it could be over for her after one album," the source added. The singer`s last song was "Live it up" which failed to impress music lovers. Her upcoming album is "Female Boss". IANS