Justin Timberlake has slammed Ashton Kutcher for stealing his style credit.

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The 27-year-old singer insists he should be recognised for making trucker caps fashionable because he started wearing them long before What Happens In Vegas star Ashton.

Justin said: “It’s funny, I keep hearing Ashton Kutcher say how he was responsible for trucker caps. Me and my friend Trace Ayala were wearing them when we were seventeen.”

Although Justin likes experimenting with different styles, he doesn’t see himself as a trendsetter.

He added: “Honestly, I don’t walk out of my house thinking, Man, I hope somebody thinks this looks cool!’

“There’s some stuff I wear that people think is not cool.”

Justin – who launched the William Rast denim line with pal Trace in 2005 – also revealed he has designed a new collection with Swedish fashion designer Johan Lindeberg.

He explained: “It is Southern heritage meets forward European innovation. I don’t want to be Mr SexyBack forever.”

Justin is set to perform at the Fashion Rocks concert – which celebrates the relationship between fashion and music – at New York’s Radio City Music Hall on 5 September.

Beyonce Knowles, Mariah Carey, Keith Urban, the Pussycat Dolls and Timbaland are also scheduled to appear.