Two sons of world’s richest man Bernard Arnault join him on board of LVMH

Pair also join two other siblings on board, further strengthening family's control of French luxury goods company

Two sons of the world's richest man, Bernard Arnault, have joined the board of LVMH after a shareholder vote, further cementing the family's control on the French luxury goods company.

The pair joined their elder siblings on the board of directors of the company, which houses brands such as Dior and Louis Vuitton, meaning four of Bernard Arnault's five children now sit on the board.