Kim Kardashian has a body envied by millions of women across the country, but the reality star says she isn't in the shape she would like.

Kardashian's voluptuous curves have made her famous, but in a new interview with Heat Magazine she said she is working hard to tighten up and tone her body, not only for her own satisfaction, but also to please her longtime boyfriend, rapper Kanye West.

"I'm sure Kanye would like it when I was skinny. It's a struggle for me, constantly," she said.

But she added that she doesn't want to completely change her body type. Instead, she is working aggressively with her personal trainer Tracy Anderson to streamline the shape she is famous for.

"I don't really want to change much. I just want to lean up a little bit and tone up," Kardashian said. "Tracy knows I don't want to change or be stick skinny or anything. I want to keep my curves but just tighten up. I fell off my regime recently, but now I'm like, I want to take this seriously, I want to work out every day for six months straight and really get it together."

Kardashian recently visited London with West and her sister Kourtney Kardashian to promote the sisters' clothing line, Kardashian Kollection for Dorothy Perkins.

While the Kardashians were promoting their line at a launch party, Kim spoke to reporters about an English woman who has become one of her personal style icons - Kate Middleton, the Duchess of Cambridge. Kardashian said she admires Middleton's wardrobe and would love to see her wearing pieces from the Kardashian Kollection.

"We love her sense of fashion. She could wear our looks and team it with one of her hats," Kardashian said.