"I am ecstatic," Williams told People magazine after the wedding
The ring bearer at the ceremony was the couple's 1-year-old black toy poodle, Mr. Max.
The night before the wedding, the couple treated guests to a cruise on a 100-foot yacht, hoping for "nothing stuffy."
Williams, 51, the host of the CBS talk show bearing his name, and Fowler, 36, got engaged July 12, 2006, when Williams proposed to the former American Airlines air hostess at Manhattan's Tavern on the Green in front of friends and family, People reports.
Williams has four children, two from each of his two previous marriages. This was Fowler's first trip down the aisle.