9pm-9am sunglasses: should you try fashion’s most divisive new trend?

How big should your sunglasses be this summer? From the top of the brow to the tip of the nose – or roughly the size of dinner plates – according to those in the know

Name: Dinner plate sunnies.

Age: People have been protecting their eyes from the sun’s harmful rays for yonks. Inuits made slitted goggles from flattened walrus ivory, the Chinese developed smoked glass to reduce glare in – or before – the 12th century and Louis XIV watched the 1706 solar eclipse through a telescope with a filter.