Hair experts like Andrew Fitzsimmons are calling it the "off-duty bun" and at the moment, the model is gaining more and more popularity.

It's like a simple bun, but not like messy buns, it includes tightly gripped hair and well combed and smooth hair even though you can adjust it as you like! 

You may have seen the model with Jennifer Llopez, Kendall Jenner, Hilary Duff or Bella Hadid. Here is how they styled it:

- Hilary Duff

- J Lo

- Kaia Gerber

- Bella Hadid

- Laura Harrier

Source: Glamor