People participate in the annual St. Patrick's Day parade along 5th Ave. on March 17, 2018 in New York City. New York's Saint Patrick's Day parade is the largest in the world. (Photo by Stephanie Keith/Getty Images)
Annual St. Patrick's Day Parade Marches Down New York's Fifth Avenue
People carry American flags during the annual St. Patrick's Day parade along 5th Ave. on March 17, 2018 in New York City. (Photo by Stephanie Keith/Getty Images)
Annual St. Patrick's Day Parade Marches Down New York's Fifth Avenue
A marching band participates in the annual St. Patrick's Day parade along 5th Ave. on March 17, 2018 in New York City. (Photo by Stephanie Keith/Getty Images)
Annual St. Patrick's Day Parade Marches Down New York's Fifth Avenue
People participate on the sidelines of the annual St. Patrick's Day parade along 5th Ave. on March 17, 2018 in New York City. (Photo by Stephanie Keith/Getty Images)
Annual St. Patrick's Day Parade Marches Down New York's Fifth Avenue
People participate in the annual St. Patrick's Day parade along 5th Ave. on March 17, 2018 in New York City. (Photo by Stephanie Keith/Getty Images)
Annual St. Patrick's Day Parade Marches Down New York's Fifth Avenue
A marching band participates in the annual St. Patrick's Day parade along 5th Ave. on March 17, 2018 in New York City. (Photo by Stephanie Keith/Getty Images)
Annual St. Patrick's Day Parade Marches Down New York's Fifth Avenue
People dress in Irish colors along the sidelines of the annual St. Patrick's Day parade along 5th Ave. on March 17, 2018 in New York City. (Photo by Stephanie Keith/Getty Images)
Annual St. Patrick's Day Parade Marches Down New York's Fifth Avenue
People participate in the annual St. Patrick's Day parade along 5th Ave. on March 17, 2018 in New York City. (Photo by Stephanie Keith/Getty Images)
Annual St. Patrick's Day Parade Marches Down New York's Fifth Avenue
People participate on the sidelines of the annual St. Patrick's Day parade along 5th Ave. on March 17, 2018 in New York City. (Photo by Stephanie Keith/Getty Images)
Annual St. Patrick's Day Parade Marches Down New York's Fifth Avenue
People gather to watch the annual St. Patrick's Day parade along 5th Ave. on March 17, 2018 in New York City. (Photo by Stephanie Keith/Getty Images)
2018 New York City St. Patrick's Day Parade
The 2018 New York City St. Patrick's Day Parade on March 17, 2018 in New York City. (Photo by Theo Wargo/Getty Images)
2018 New York City St. Patrick's Day Parade
The 2018 New York City St. Patrick's Day Parade on March 17, 2018 in New York City. (Photo by Theo Wargo/Getty Images)
2018 New York City St. Patrick's Day Parade
The 2018 New York City St. Patrick's Day Parade on March 17, 2018 in New York City. (Photo by Theo Wargo/Getty Images)
2018 New York City St. Patrick's Day Parade
The 2018 New York City St. Patrick's Day Parade on March 17, 2018 in New York City. (Photo by Theo Wargo/Getty Images)
Annual St. Patrick's Day Parade Marches Down New York's Fifth Avenue
A marching band participates in the annual St. Patrick's Day parade along 5th Ave. on March 17, 2018 in New York City. (Photo by Stephanie Keith/Getty Images)
Annual St. Patrick's Day Parade Marches Down New York's Fifth Avenue
Mayor of New York City Bill de Blasio arrives to the annual St. Patrick's Day parade along 5th Ave. on March 17, 2018 in New York City. (Photo by Stephanie Keith/Getty Images)
Annual St. Patrick's Day Parade Marches Down New York's Fifth Avenue
People participate on the sidelines of the annual St. Patrick's Day parade along 5th Ave. on March 17, 2018 in New York City. (Photo by Stephanie Keith/Getty Images)
2018 New York City St. Patrick's Day Parade
Grand Marshal Loretta Brennan Glucksman attends the 2018 New York City St. Patrick's Day Parade on March 17, 2018 in New York City. (Photo by Theo Wargo/Getty Images)
2018 New York City St. Patrick's Day Parade
Grand Marshal Loretta Brennan Glucksman attends the 2018 New York City St. Patrick's Day Parade on March 17, 2018 in New York City. (Photo by Theo Wargo/Getty Images)
2018 New York City St. Patrick's Day Parade
New York Governor Andrew Cuomo, Cardinal Timothy Dolan and Prime Minister of Ireland Leo Varadkar attend the 2018 New York City St. Patrick's Day Parade on March 17, 2018 in New York City. (Photo by Theo Wargo/Getty Images)
2018 New York City St. Patrick's Day Parade
Cardinal Timothy Dolan and Grand Marshal Loretta Brennan Glucksman attend the 2018 New York City St. Patrick's Day Parade on March 17, 2018 in New York City. (Photo by Theo Wargo/Getty Images)
2018 New York City St. Patrick's Day Parade
The 2018 New York City St. Patrick's Day Parade on March 17, 2018 in New York City. (Photo by Theo Wargo/Getty Images)
2018 New York City St. Patrick's Day Parade
The 2018 New York City St. Patrick's Day Parade on March 17, 2018 in New York City. (Photo by Theo Wargo/Getty Images)
