The phrase on fleek was popularised in 2014 when Vine creator Peaches Monroee described her eyebrows as on fleek in a short video, and the slang quickly spread across Vine, Twitter and Instagram. It soon became shorthand for something perfectly groomed or flawlessly done, especially eyebrows, and was later picked up in songs, captions and beauty tutorials. Years later it still works as instant internet shorthand, because almost anyone who lived through the Vine era recognises the reference immediately.