Kate, the Princess of Wales, sported a forest green long coat with matching hat as she marked St. Patrick's Day with a solo visit to the Irish Guards at Wellington Barracks.

A Guinness ambassador from Ireland shared with Fox News Digital some of the Irish stout's connection with the United States — and which food selections pair best with it.

While St. Paddy’s is typically known as a big drinking holiday, those who are abstaining for whatever reason need not be left out. Nonalcoholic beer has been growing in popularity over the last few years, and the Irish king of beers has taken a swing at it, too.