The label, founded by Pip Edwards and Claire Tregoning, was first spotted in a selfie on the 19-year-old’s Snapchat.
Decked out head-to-toe in P.E Nation, the Keeping Up with the Kardashians star sported an orange crop top paired with grey track pants and a grey hoodie tied around her waist.
What happened next is every fashion label’s dream.
The crop top instantly sold out online - and what's more, the antipodean brand had only launched a few weeks prior.
Turns out the 'Kylie-Jenner Effect' obviously works and celebrities can't get enough of crops, spray jackets and leggings.
Bella Hadid and Ruby Rose are also counting themselves as fans.