Tens of thousands of revellers turned out decked in green for New York's St Patrick's Day parade in New York.
Almost two million people were expected to line Fifth Avenue for the event.
As St Patrick's Day falls on a Sunday this year, the parade was held a day earlier because of religious observances.
Earlier, Taoiseach Enda Kenny started festivities in the city with breakfast at Gracie mansion.
It is the residence of New York Mayor Michael Bloomberg.
Mr Bloomberg praised the contribution of Irish immigrants to New York over the generations and urged politicians in the US to embrace immigration reform.
The mayor also praised the management of the Irish economy, heralding what he called a miraculous turnaround.
Mr Kenny thanked the mayor and moved on to a series of meetings with Irish community groups before the start of the New York parade, which is billed as one of the largest in the world.
Dublin Airport Authority says it expects 225,000 people will travel through the arrivals and departure gates over the bank holiday weekend for the festivities.
In Co Wicklow, the organisers of an attempt to break the world record for the largest number of people dressed as St Patrick in the one place say they counted 946 people at today's event.
The results will now be submitted to the Guinness Book of World Records which will decide if the record has officially been broken.
The event took place in Wicklow town this afternoon.
Last year, the town of Ardara in Co Donegal had 229 people dressed as St Patrick take part in its parade.
Meanwhile, Ireland's Ambassador to Bucharest Oliver Grogan said that the Romanian government's decision to light up the Palace of Parliament in green "is a great gesture" saying "the Palace of Parliament is a building that is a symbol in Bucharest."
"The fact that it has been lit in green represents the ever-closer ties between Ireland and Romania," he added.
Pottery for the First Lady
Separately Kylemore Pottery, which is produced in the heart of Connemara, is on its way to the White House in Washington.
The fuchsia pottery has been selected as a gift for Michelle Obama.
The Taoiseach will present the pottery to the First Lady on his St Patrick's Day visit on Tuesday.
The gift comprises of a fuchsia cream jug and matching sugar bowl and mugs.
The pottery was founded by the Benedictine Nuns in 1973.
They began by producing a range with a plain glaze. It was later developed to include the fuchsia design.
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