Kim and Kourtney Kardashian launch clothing range in London

Kim and Kourtney Kardashian have launched their new clothing range for Dorothy Perkins.

The Kardashian Kollection was a joint effort by Kim and Kourtney with sister Khloe, who was unable to attend because of filming commitments in the US version of The X Factor.

Kim - who wore a black sequinned mini-dress for the launch - said her famous boyfriend Kanye West has been supportive of her latest business venture.

"He likes the way I dress," she added.

Kim also confessed that she suffers from the occasional wardrobe malfunction.

She said: "I look back at things from really recently and I'm like, 'Oh my God, why did I wear that, what was I thinking?'

"But it's fun. You see what you like and what you don't and experiment."

Mum-of-two Kourtney also praised British women's "individual style".

She said: "It's not like matchy-matchy, everyone in the same thing, it's very different."

The curvaceous socialite and her sister Kourtney, joined retail mogul Sir Philip Green to promote the range at Dorothy Perkins.

X Factor contestants Jahmene Douglas, Rylan Clarke, James Arthur, District 3 (minus bandmate Michael Parsons) and Ella Henderson also attended the bash.