The runway beauty was leaving the Love Magazine bash at LouLou's Members Club in Mayfair with two male pals when one of the guys took issue with a snapper and became embroiled in a physical altercation.

It's not clear what sparked the brawl, but Dunn had to intervene and was caught on camera shouting at the pair as they tussled in the street.

She eventually managed to pull her friend away and they left in her waiting car.

Other stars in attendance at the London Fashion Week event included fellow models Cara Delevingne and Suki Waterhouse and One Direction singer Harry Styles.