To clarify, it's Amber's comments about Kylie Jenner that have miffed Khloe; perhaps the latter hasn't heard that Amber also called Kim "a fake" "Puerto Rican girl".  

The Keeping Up With the Kardashians star, 30, took to her Twitter last night to mock the rapper's past as a stripper after the musician took a swipe at the 17-year-old during an interview last week following rumours she's dating Tyga, 25.

In a series of posts, Khloé stood up for her sibling, posting...

Amber of course shot back with...

Then Khloe retorted with...

And then it went on... and on.... and got a bit weird with Amber saying she had "the best leaked nude photo", because that's something to be proud of.

The feud kicked off after Amber referred to Kylie as a "baby" and slammed Tyga for splitting with her pal Blac Chyna, with whom he has two-year-old son, King Cairo.

She said: "[Kylie's] a baby, she needs to go to bed at 7 o'clock and relax. That's ridiculous. [Tyga] should be ashamed of himself. That's how I feel. For sure. He has a beautiful woman and a baby and left that for a 16 year old who just turned 17."

Yeeeah, what she said about Kim was definitely worse - mainly on account of the level of hypocrisy involved: "When Kim first came out, I was like, 'Who the f**k is this Puerto Rican girl with Paris Hilton?! This b**ch is beautiful!. Yeah, I thought she was Puerto Rican, I'm from the East Coast. So, that's initially what I thought of Kim. I was just like, 'Wow, this girl's amazing.' '[But then] she posted a selfie, and she had like one of her boobs out of the bra or whatever. It's just fake to me."

Pot. Kettle. 

As for Kim's marriage to her ex of two years, Amber added: ""she has potential to be, like, really dope, but to me she's not. It doesn't have to do with Kanye. They're a match made in Heaven for sure."