Khloe Kardashian swears by Spanx.

The bubbly reality star - who is currently promoting the latest Kardashian Kollection for Lipsy with her sisters Kim and Kourtney - says her top tip for looking good on the red carpet is the body-hugging undergarment, which gives the illusion of a streamlined figure and makes her feel more confident.

She exclusively told BANG Showbiz: ''My number one secret is Spanx. Suck it in! I don't care how skinny you are, it's not about making you look thinner, it's about no lines. And let's suck all that stuff in! I'm all for Spanx.

''But other than that, water. It changes your skin. I was never into water when I was younger - but now I'm all about it because I'm mature and wiser now!''

In spite of the Kardashian sisters' gorgeous looks, Khloe admits the girls all suffer from body insecurities and she is especially self-conscious about her upper arms.

The 29-year-old beauty explained: ''I hate my arms, they're my least favourite body part so I love to cover them up. We have some great jackets in the Kollection, even with a fitted dress, I like to put a little jacket over it.

''I think [with my sisters], our body insecurities rotate. Other than that I think, just show it off!''

The 'Keeping Up With The Kardashians' stars have been busy expanding their fashion empire with the launch of the Kardashian Kids range, but Khloe joked she hasn't been much help compared to Kim - who has nine month old daughter North with Kanye West - and Kourtney - mother to Mason, four, and Penelope, 20 months - because all she does is coo over the small clothes.

She said: ''Now that North is here and Kim is dressing her and Penelope's getting older, Kourtney and Kim are definitely more opinionated than I am.

''I just think everything is so cute because everything in little sizes is just so adorable! But Kourtney and Kim know what fabrics are better because they have kids so that's interesting.''

The Kardashian Kollection for Lipsy is available in selected Lipsy stores and at www.lipsy.co.uk.