Kim Kardashian West tried ''every Hollywood diet going'' when she was just 13 years old.

The 34-year-old reality star was very conscious of her appearance from a young age and her childhood friend Nikki Lund admits they were obsessed with faddy eating plans.

Nikki - who went on to develop an eating disorder - said: ''She was conscious of her weight, we tried every Hollywood diet going.

''It was mostly the Atkins and South Beach diets. We did the Cabbage Soup Diet and we'd be there boiling great big vats of cabbage soup.

''We were like, 'Yes, we're going to be thin.' [But] I developed anorexia, I just wouldn't eat. Kim never really had that.''

Nikki also couldn't understand why her friend hated her nose so much when they were younger.

She added: ''Kim was always saying her nose wasn't perfect. I thought she was nuts. Every girl has something they don't like.''

However, the 'Keeping Up with the Kardashians' star has always embraced her famous curvy butt because she was so obsessed with Jennifer Lopez.

Nikki added to heat magazine: ''Kim has always loved J-Lo and would do squats [to get a butt like hers].

''I do look at Kim now and think, 'You've changed.' But she loved Jennifer Lopez and she loved having a booty like that. 'If You Had My Love' was her favourite song.''