Kylie Jenner and Blac Chyna are best friends

Kylie Jenner and Blac Chyna have always been "best friends". 

The 'Keeping Up With the Kardashians' star - who is dating the 27-year-old model's ex-fiancé Tyga, with whom she has a three-year-old son King Cairo - took to Snapchat on Thursday (21.04.16) with a selfie dismissing speculation of a feud between them and claiming they have been pals the "whole time". 

The 18-year-old TV personality captured a bathroom selfie with her beau's former lover on Snapchat, which was then shared on her Instagram account, although it has since been removed from the site. 

Kylie wrote: "When we've been best friends the whole time (sic)."

Blac swiftly followed suit by uploading a string of pictures with the Kylie's Cosmetics businesswoman; one of a face-swap and another mirror shot.

And the make-up artist - who is engaged to Kylie's half-brother Rob Kardashian - captioned her uploads: "Hanging out with my lil sis."

Even Tyga, 26, was said to be stunned by the picture.

Speaking to, a source close to the musician said: "Tyga never thought he'd see this day. He's shocked like everyone else that his girl and his ex are chilling together. He's not trying to make a big deal out of it. 

"He and Kylie have been solid for the past few months and he's not trying to bring any drama into their relationship. Kylie clearly is the one doing that at this point!"