The `Best Behaviour` group said they are "trying to grow up" and shed their previous image of a tracksuit wearing group of grime-pop rebels, as they prepare to embark on a campaign to launch their career in America.
Producer Fazer said: "We`re trying to grow up. Everyone thinks they know N-Dubz for straight Adidas tracksuits, but we don`t like that.
Rapper Dappy added: "From now we`re starting things like cardigans, crazy shirts, these crazy kind of brown trousers, these crazy suave shoes."
Fazer added that because of the group`s image people wrongly perceive how often they appear in sportswear.
He added: "You`ll never see me and Dappy go out and buy a straight tracksuit unless it`s to wear in the house before we go to bed or if we go down to the gym - if we go to the gym."
While Dappy and Fazer are concentrating on sharpening their image up, they both paid compliment to bandmate Tulisa, who they say can make anything look good.
Dappy added: "Anything you give me and Fazer to wear, we will wear. But anything you give Tulisa to wear - even if she don`t like - it she`ll make it look absolutely amazing, she can seriously make anything look good. Armani, Versace, Gucci, listen up!"
`Best Behaviour` is available now, while N-Dubz as-yet-untitled album will be released on November 19.