Temperatures may have plummeted as fashion week played out over the past four weeks, but it will take more than a beast from the east to make the fashion pack leave their opticals at home (American Vogue editor-in-chief Anna Wintour famously left her signature shades on to meet the Queen at the Richard Quinn show during the London leg of shows). Call it eternal optimism – or call it never a street-style photo opportunity to be lost – but sunglasses were out in force and three distinctive tribes formed ...

1 The Matrix

The matrix. Photograph: Guardian Design Team

The trend championed by Kim Kardashian, Rihanna and both Hadid sisters was seen in all manner of diminutive angular frames at the shows. Perfect for perching on the nose and peeking out at the runway.

2 The tint and shade

The tint and shade. Photograph: Guardian Design Team

Making the world a brighter place, coloured opticals were a thing, with lens gradients ranging from ever-so-slightly rose tinted to maxed-out and sun-drenched.

3 The square route

The square route. Photograph: Guardian Design Team

Oversized and angular, these trapezoid and square-shaped frames were a chic way to achieve maximum coverage.