Tyga's ex-girlfriend Blac Chyna has posted two seriously menacing snaps of herself wielding a knife in her underwear on Instagram.

The first shows Chyna bent over on all fours in a sheer thong leotard while piercing the knife into a marble floor captioned, "Loooove me and Leave me? That's the story of my life..... But it won't happen again see cus I bought this butchers knife uhmm".

The second photo shows the model licking the blade while showing off her cleavage and dark vampy make-up.