If we were to ask you to dream up an autumnal colour palette, which shades would you include? Perhaps burgundy with a helping of tan, khaki and navy? Although the aforementioned colours are certainly proving popular right on cue, autumn 2019 is also shaping up to be one of the most colourful on record. Shades of lime and lilac have long dominated the shops, but now, a new hue is set to surpass their appeal. Buttermilk not only sounds tasty but, as it turns out, it's one of the season's most delectable trends too. "What started off as a micro-offshoot from last year's omnipresent beige is now bigger business than many might have expected," explains Hannah Almassi, Who What Wear UK's editorial director.