The socialite showed off her sense of humour when she agreed to 'marry' the America's Got Talent judge in a staged 15-minute ceremony at the Little Church of the West for the upcoming U.K. programme Piers Morgan On... Las Vegas.
Hilton donned a long white bridal gown and veil, before exchanging vows and rings with Morgan in front of witness including an Elvis Presley lookalike and a Marilyn Monroe impersonator.
And the 28-year-old blonde insists the low-key celebration was typical of Sin City's shenanigans: "You can do anything here - it's crazy! What happens in Vegas, stays in Vegas."
Morgan jokes, "You know what it's like - you have a few drinks, spend too long on the blackjack table, get overexcited and do something silly. I have to say, Paris scrubbed up to be a beautiful bride. It was magical."
The fake nuptials served as a useful practice session for Morgan, who proposed to journalist Celia Walden in Paris, France earlier this month (Dec09).