As the Kardashian Jenner family continue to publicly ignore Rob Kardashian's engagement to Blac Chyna, his future wife has only stirred the pot further, by throwing shade at Rob's half-sister Kylie Jenner and her famous Lip Kits.

Reposting a meme of one of Kylie's Lip Kit announcements by comedian Christine Sydelko, where Christine uses acrispto demonstrate the "new shade" of her Lip Kit, Chyna used the caption to point to her own business, Lashed By Blac Chyna – where she sells her own brand of Liquid Lipstick.

We're not sure Kylie will see the funny side, now Chyna – who has a 4-year-old son with Kylie's boyfriend, Tyga – is engaged to her brother, essentially making Tyga both father AND uncle to his own son if the nuptials go ahead.

On Friday Rob shared a video on Instagram of his elder sister Kim Kardashian saying, "Rob, we really need to talk," while using a Snapchat filter to make it look like she was crying.

Captioning the video, "Had to post this snap my sis sent me. LOL she's got jokes! #KimsCryFace," we can't work out if the Kardashians are kool with Rob's engagement or if they really do, as reports would suggest, think he's making a mistake.

Either way, let the wedding planning commence.