He "shopped" for something nice to bring to Washington instead of attending a commemoration at the Aisne-Marne American Cemetery of war heroes.
The Goop founder posted a selfie on a flight to Paris and joked about her 2011 film "Contagion."
The services at the Paris cathedral, which continued through two world wars and Nazi occupation, were relocated after this year's fire.
The attacker was also killed in the incident close to Notre Dame Cathedral.
A fire engulfed the iconic Notre Dame Cathedral in Paris on Monday. Photos show flames leaping from the historic cathedral
The incident was caused by a gas leak, police believe.
O’Naturel will serve its last naked meal on Feb. 16.
President Emmanuel Macron broke his silence to tweet his appreciation for the police overnight, but pressure mounted on him to propose new solutions to calm the anger dividing France.
Riots grip Paris once more as police battle to put out flames and keep order.
Three weeks of protests have left four people dead and were a massive challenge to Macron.