Pitt, 51 and Clooney, 53, tied the knot earlier this year to their respective partners Angelina Jolie and Amal Alamuddin, and the couples got together at the 'Gravity' star's mansion, reported Femalefirst.
Clooney invited the head chef from one of his favourite restaurants to cook a lavish seafood dinner and went to Pitt's Miraval estate in France to ship wine from their vineyard.
"The head chef from George's favourite restaurant, 'The Musso & Frank Grill', cooked up a huge meal for the two couples with oysters and lobsters.
Pitt tied the knot with Jolie, 39, on August 23 in France and Clooney married Alamuddin, 36, on September 27 in Italy.