Now that September is eagerly scratching at the door, we're allowed to begin overusing the word "transitional" again. Given we spend most of our time in no man's land weather-wise, dressing for in-between temperatures should come easily to us Brits. Which is why we're not surprised London-based label Three Floor has done cross-seasonal clothing perfectly. Combining a Summer style with a Winter fabric, the Hunky Dory Dress (£81, originally £136) is a great piece to stash in your September wardrobe. A leather biker jacket would be perfect thrown on top, while neon sandals would give the final look a subtle flash of colour.