A wind turbine blade comprising a leeward shell portion and a windward shell portion, each of the shell portions extending in a chordwise direction between a leading edge and a trailing edge of the wind turbine blade; a leading reinforcement arrangement comprising at least a leading leeward reinforcement structure engaging the leeward shell portion and a leading windward reinforcement structure engaging the windward shell portion; and a trailing reinforcement arrangement comprising at least a trailing leeward reinforcement structure engaging the leeward shell portion and a trailing windward reinforcement structure engaging the windward shell portion. The trailing windward reinforcement structure has a first stiffness in the lengthwise direction and the trailing leeward reinforcement structure has a second stiffness in the lengthwise direction, wherein the first stiffness is greater than the second stiffness at a chordwise plane of the wind turbine blade.