Kendall Jenner at In-N-Out Burger ‘all the time’

Kendall Jenner goes to In-N-Out Burger "all the time".

The 20-year-old model’s half-sister Khloe Kardashian has revealed her sibling can’t get enough of visiting the fast food restaurant and admitted she also loves calorific treats such as "pizza".

In a new post on her official website, titled ‘KHLO-FIT: My Sisters’ Diets Are Cray’, Khloe wrote: "She loves burgers and pizza and goes to In-N-Out all the time. Kendall is my go-to girl on cheat day!"

While Khloe, 32, has slimmed down in recent years, she still doesn’t like to let her sister Kourtney Kardashian look at her pantry because her sibling eats much more healthily in comparison.

She wrote: "Kourt only eats organic food and has pretty much convinced herself that she is allergic to dairy and gluten too."

Khloe joked she feels as though she has to close her pantry door when Kourtney, 37 – who has three children Mason, six, Penelope, four, and Reign, 20 months – visits "so she doesn’t yell at me for what’s in it, LOL".

The brunette beauty also doesn’t approve of her sister Kim Kardashian West’s diet, revealing she has ditched sugar and carbs but still eats "meat and dairy", nor her half-sibling Kylie Jenner’s eating habits.

Speaking about the 19-year-old model, she said: "Kylie eats like a typical teenager but she’s also super aware of what she puts in her body when it comes to fresh and organic foods. It’s all about that moderation, boo."

The star even joked that she might not be related to her sisters because they have such different diets.

She wrote: "We all have such different eating habits that sometimes when we’re trying to choose a restaurant I wonder if we’re even related. LOL! (sic)"