The 'Top Gun' actor - who reportedly wore a corset to hide the weight he has gained when the couple tied the knot in Italy last month - began gobbling pizzas as soon as they were cooked after the ceremony.
Princess Maria Odescalchi who hosted the wedding at her family's castle revealed to Hello magazine: "Tom at one point started eating pizzas in the kitchen as they were making them!" Odescalchi let Tom and Katie marry in her castle for free after befriending them through Roberta Armani, the niece of designer Giorgio Armani, who designed all the wedding outfits.
She insists the couple are very much in love and is "thrilled" they decided to wed at the castle, in Lake Bracciano, near Rome.
Odescalchi gushed: "Tom and Katie are so in love. They are a great couple.
Tom is a fantastically generous man and very sensitive. He likes the very simple things in life.
"And I am thrilled, thanks to him and Katie, that this castle and this village are now known throughout the world."