It's thought that Cat, 35, wore a ruffled dress, with flowers in her hair. Meanwhile, her 41-year-old groom was dashing in a black suit.
They tied the knot in St Isidore’s College Church, with Patrick's parish priest Father Gary Donegan officiating. Such was the secrecy surrounding their big day, that some guests only learned about the wedding at the last minute.
The British TV presenter has been radiating contentment since they were first linked after holidaying with her Irish comedian beau in February.
Soon afterwards the funnyman moved into her Beverly Hills Mansion, and rumours of an engagement began to circulate.
These were denied, but it was clearly serious as Patrick hinted last year that it wouldn't be long before he had a ring on his wedding finger. "I think that might be my New Year's resolution... to get married," he said.