Francois-Henri Pinault, the husband of Hollywood star Salma Hayek, has offered €100 million towards the rebuilding of Notre-Dame.
The roof and spire of the iconic 856-year-old cathedral in Paris collapsed amid a huge blaze on Monday (April 15).
In a statement to French newspaper Le Figaro, Pinault pledged €100 million to help with the "complete reconstruction" of Notre-Dame.
In the statement he said: "This tragedy strikes all the French and beyond all those who are attached to spiritual values. Faced with such a tragedy, everyone wants to revive this jewel of our heritage as quickly as possible.
"My father and I have decided to release from the funds of Artemis a sum of €100m to participate in the effort that will be necessary for the complete reconstruction of Notre-Dame."
Hayek posted a picture of the cathedral up in flames on Instagram and wrote: "As many others I'm in deep shock and sadness to witness the beauty of Notre-Dame turn into smoke. I love you Paris."
Pinault is the chairman and CEO of the Kering group, which owns such brands as Gucci, Yves Saint Laurent and Alexander McQueen, and is also president chairman of Artemis, the holding company that controls the assets of the Pinault family.
The cost of rebuilding the cathedral is expected to run into billions of euro.