You mightn't tell by the exchange, but only one of them is a teenager.
Kylie Jenner's boyfriend Tyga's ex Blac Chyna clearly isn't happy he's moved on.
The two have long been in a rumoured feud since the 17-year-old reality star first hooked up with the rapper last year.
But his former girlfriend and mother of his child isn't holding back when it comes to letting the world (aka her 2.6m Instagram followers) what she thinks of her ex's new (alleged) love interest.
The model let the picture speak for itself as she posted the selfie wearing oversized 'Wack o Wax' lips, with no caption.
It comes just hours after the #KylieJennerChallenge took the internet by storm leaving dozens of teenage girls keen to emulate her plumped up pout with facial brusing.