N-Dubz: We're evolving with age
N-Dubz have insisted their changing style has developed naturally as they grew older, not because they are trying to conquer America.
The London hip-hop group, formed of cousins Dappy and Tulisa and friend Fazer, signed a deal with US label Def Jam and are working to break the US market but insist they haven't changed for the American charts.
Dappy said: "Not really, we've maybe taken it more universal sound-wise."
Tulisa added: "I think we've done that anyway I think we're growing up as people, that's why we're dressing differently."
Fazer revealed: "If you listen to our last record, it's not going to be like the next record and it's been like that through our whole careers. Every single record's been different from the one before."
Dappy added: "In order to stay relevant, you always have to come up with something new at the end of the year - set out new trends, so you can stay relevant. So they can say 'Oh they did that this year, what are they going to do next?' That is how you stay relevant."
Tulisa is to begin filming her big screen debut later this month in Suicide Kids, about a young girl who takes her own life, encouraging seven other depressed London teenagers to form a suicide pact.
But the 22-year-old singer insists her focus is on her music at the moment and so her role in the film is small.
She said: "It's just a small opening scene and when I find the time then I'm going to go for the bigger roles."