By Emily Sheridan
Standing tall at 5ft 10in, Khloe Kardashian towers over her sisters Kim and Kourtney, with many critics accusing her of looking larger in width as well as height.
But despite unfair comparisons with her diminutive older sisters, Khloe admits she struggles with her fluctuating weight.
And while accepting she'll never be size zero, she admits she does feel insecure about her body.
As she poses in a family photo shoot for the British edition of Cosmopolitan magazine, Khloe opens up about her weight issues.
She tells the December issue of the glossy: 'It isn’t easy. My weight fluctuates, like any normal girl, and I have times when I feel insecure.
'So if I come under scrutiny at one of those times, then I might get really down on myself. But the next day, I might be like, "Oh, f**k off, I’m so much better than that."
'But I also enjoy life… the more scrutiny I am under, the more confident I become. I am who I am. I can’t do anything about it, and I love who I am.'
When it comes to Kim receiving confidence, she admits she turns to rapper boyfriend Kanye West.
She gushes: 'My boyfriend. He’s great at boosting my confidence. He gives me compliments in every way possible.'
However, the trio admit they wish they had the confidence their younger sister Kylie, 16, has at her age.
Kourtney explains: 'I thinkour sister Kylie  has such confidence; it’s just amazing.'
Despite in the process of ending her second marriage, Kim admits she turns to Kylie for relationship advice.
She said: 'She’s such an old soul. I’ve been going to her for relationship advice for years. She has always steered me in the right direction since she was about 12. She would be like, "OK, do not call him."'
The sisters' covershoot comes as they won the Ultimate Confidence Queens Award at the Cosmopolitan Ultimate Women Awards 2012 with VO5 on 30th October.