Kate Moss left her trademark devil-may-care approach to fashion at the door for a sophisticated new photo shoot for U.S. Vogue.

The supermodel passed over her favourite denims for a prim dress and diamonds, her look more at home on the Upper East Side than gritty North London.

Enlarge 

Prim: Kate Moss polishes up for the latest cover of US Vogue

Carefree Kate: Miss Moss holidaying in Sardinia last month

Despite her ease in front of the camera, the 34-year-old told the publication she plans to scale back her modelling work, branding it 'a bit brain-damaging.'

Her focus now, she says, is fashion design and she plans to only model if 'they are such good jobs that you don't want to say no.'

'All that dressing up makes me say, "What do I want to wear?" and, "What do I want to do with Topshop?" It all kind of leads into the other things.'

And then there's her other important project - daughter Lila Grace, 5.

She says: 'I'm a mum. All the time. Every day. I put my daughter to bed.'

Still, the star says she's doesn't let it get in the way of good times.

'I am still acting like a 17-year-old. I definitely haven't become middle-aged.

'I've got a house and a daughter and all that, but I still like to have fun. Even in my business we still have fun.'

Shabby chic: Kate at this year's Glastonbury festival