Kanye West encourages Kim Kardashian West to ''dress sexier.''

The 'Keeping Up with the Kardashians' star insists her husband, with who she has 19-month-old daughter North, has no problem with her posing nude for magazines.

The 34-year-old beauty said: ''I like nudity. Kanye always says, 'Dress sexier' - he's always the most encouraging.''

The reality TV star also admits she and her husband enjoy spicing things up in the bedroom.

Asked what her favourite sexual position is, she said she likes if from the back.

Despite being body confident, Kim admits to British model Cara Delevingne, 22, in an interview to accompany her latest naked photo-shoot for LOVE magazine that she is envious of her younger half-sister Kendall Jenner's perfect figure.

She said: ''You always want what you can't have. I'd love to swap bodies with Kendall for just a week, just to look from that little bit higher up and fit into everything perfectly.''

Kim recently revealed she has hired a nutritionist to help her lose 15 pounds.

She said: ''I just started to eat really healthy and work out more and just try to change my lifestyle.''