London Fashion Week S/S '26 is coming to a close and the street style stars—like the designers showcasing their work over the last few days—did not disappoint. But the most popular hair look of the week has definitely been the London bob, aka the Brits' version of the haircut that continues to take both Hollywood and the fashion set by storm. (Image credit: Launchmetrics)But what defines a London bob? Ready to try out the London bob for yourself? Chris McMillan The Hair Styling Balm $38 at Sephora.com, Inc. Add some light hold and shape your shorter pieces like a pro with a lightweight styling balm.