Los Angeles: Reality TV star Kim Kardashian West makes the same order at her favourite deli so often that she has her own button on the till.

‘I was in Calabasas and I popped into Health Nut, the store where her family buy the salads they are always eating. I asked the guy at the counter for Kim's favourite salad. 'No problem' he said, putting my order into the till and taking my money,’ Author Sean Smith, who is writing a biography of the reality star, told heat magazine, reports femalefirst.co.uk.

‘What's in it?' I asked. 'No idea', he said, 'I just hit a button marked Kardashian,'‘ Smith added.

The 34-year-old has her favourite salad at the deli, she said that she and husband Kanye West have hired a nutritionist who changes their meal plan regularly.

‘Kanye loves to eat really healthy and is always on different diets. He has a chef who comes in the morning and cooks breakfast for both of us and gets our meal plans together for the day. We just started seeing a nutritionist who changes our diet every 10 days,’ she said.

‘I think after you have a baby you want everything to be as pure as possible. I want to set an example and to be natural and healthy. It's a decision Kanye and I made, to see a nutritionist together,’ Kim added.