Kourtney Kardashian’s mushroom bob haircut is very 1920s flapper

To be completely honest with you, I never feel quite fulfilled without a Kardashian-Jenner hair transformation—the life of a beauty journo, ey? Taking one for the team today is the eldest of the sister clan, Kourtney, with her very own take on the recently popular bob hair trend. Think: it's her way or the highway (rightly so)...and we ain't mad about it.

Posting an Instagram Story mirror selfie—as one does—Kourt looks to be showing off her 'fit for the day. Now, while we're so here for the jeans, graphic tee, bomber jacket and heels combo, what takes our fancy on the Cosmo beauty desk is her hair, duh! The mum-of-three's freshly-cut, shiny dark locks have been styled with a rounded edge and curved lines, giving what we like to call, a 'mushroom' bob.

This particular style of bob was popular circa 1920s flapper era, and usually would've been paired with a blunt cut full fringe.

Although Kourtney's tousled straight round cut isn't quite level with the lobes of her ears (as it would have been way back when), it's certainly shorter than your average shoulder-length bob.

The star also took to our main feeds with an eight-part carousel grid post, in which we are given a closer look at her hair.

I mean, just add a curl and a kink and she's pretty much Betty Boop!

If you haven't jumped on the bob trend by now (read: Hailey Bieber, Zendaya and Sarah Michelle Gellar are all leading ladies), then I think Kourt's cut is a sign to do so... happy chopping!