Any style of bob works well in cooler months when big jackets and turtlenecks come out to play, but we’re calling it now: the razored bob is this season’s sharpest style. Taking to the red carpet to celebrate season four of Emily in Paris this week, Lily Collins showed off her own razored bob—and it was pretty perfect. Parted down the middle and tucked behind one ear, the cut sat a couple of centimetres above her shoulders and featured razored ends and a mussed-up finish.

The hairstylist behind the look, Gregory Russell, created a sleek parting that graduated down into more texture at the bottom. George Northwood , London’s king of bobs, is also a fan of Collins’s look. But what exactly is a razored bob? “Unlike bobs cut with scissors, this is cut with a razor, which gives a slightly jagged, textured edge,” he explains.

“It almost looks a bit torn at the bottom, so is less harsh than a normal bob, which gives it a more modern feel.” One-length bobs that have been cut with scissors can look a bit prim, so this technique lends a slightly undone, cool finish to the hair, whether it’s been styled or not. In Northwood’s view, cuts like these should be worn as naturally as possible: “Kind of straight, but a natural kind of straight,” he adds.

Another good example of the cut worn well is French influencer Lena Simonne’s lived-in razored bob. Styling? Naturally, we all want to do as little as possible, and luckily this cut lends itself to that. Heed Northw.