As the owner of the most powerful headgear arsenal in music, it came as no surprise that Pharrell turned up to play Radio 1's Big Weekend in Glasgow over the bank holiday wearing a rather fetching fedora.

But it's more than just the enviable hat that makes this outfit sing. Pharrell's master stroke is clearly the jacket. Somewhere between a classic Harrington and a bomber, it's cropped at the waist, snugly fitted without being too tight and has a subtle floral pattern – all of which marks it out as an ideal extra layer for that tricky period of transitional dressing between spring and summer.

Check out our pick of the best seasonally-appropriate jackets below.