This month, Sweeney dyed her almost trademark blonde hair a lighter shade of copper: a colour known as “mahogany blonde”. “This shade is an earthier version of the well-known strawberry blonde.

Rare, flamboyant and full of character, red hair attracts the eye and evokes an aura of mystery. Whether it is a coppery red, a deep mahogany or a delicate Venetian blonde, this color has the power to ...