The British model is friends with a number of the famous sisters - including Kim Kardashian West, Khloe Kardashian, Kourtney Kardashian and Kylie Jenner - and their mother Kris Jenner, but is particularly close to her fellow model.
Asked her favourite Kardashian by 'Entertainment Tonight', she said: ''Oh I can't do that. I mean, Kendall... but I love the whole family, I can't really pick one.''
Cara, 22, has previously joked she considers herself a member of the family.
Posting a picture of herself with Kendall and Khloe on Instagram, she previously wrote: ''I am Cara with a K now hehehe! #KARA (sic)''
And sharing a photo of her own, Khloe previously wrote:
''Introducing Cara with a K!!!! She is now Kara everyone!!!! Woooohoooooooo.(sic)''
Cara grew close to the Kardashian family following the death of her beloved grandmother.
A source said in February: ''Her grandmother died last month, which has been particularly tough for her - not least because she hadn't been home much in the weeks leading up to it.
''Kendall picked up on all of that - she's good at reading people - and went out of her way to introduce her to the whole Kardashian family. Of course, with Cara's natural charisma, they loved her from the word go, and they're very protective of her.
''Nowadays, it's like they've practically adopted her.''
Here's what the public had to say about the death of Phil Spector.
Lana Del Rey takes her 60s vintage aesthetic to the extreme with the video for new single 'Chemtrails Over The Country Club'.
As negotiations continue, it's clear that the UK government doesn't have everyone's best interests at heart.
The singer awkwardly responded to potential backlash regarding her new album cover.
Five years ago, on the day of his 69th birthday and two days before his death, David Bowie released his 25th, and final studio album, 'Blackstar'.
Nobody is impressed by Demi "coming to the rescue".
Let's leave gatekeeping in 2020.
These are the albums we're looking forward to most this month.