President Barack Obama and first lady Michelle Obama welcome the Prime Minister of Canada Justin Trudeau and his wife Sophie Gregoire-Trudeau before a state dinner at the White House.

Ryan Reynolds and Blake Lively arrive at the White House for the Trudeau state dinner.

Sasha Obama at her first state dinner on March 10.

U.S. Senator Susan Collins and Peter Vigue, CEO of Cianbro Corporation, arrive at the White House for the state dinner held in honor of Canadian Prime Minister Justin Trudeau

U.S Sen. Angus King, I-Maine, arrives with Kathryn Rand for a state dinner in honor of Canadian Prime Minister Justin Trudeau at the White House on Thursday.

Sophie Gregoire-Trudeau, wife of Prime Minister of Canada Justin Trudeau, during a state dinner.

Malia Obama attends her first state dinner in honor of Prime Minister of Canada Justin Trudeau.

Actor Michael J. Fox and Tracy Pollan before the state dinner in honor of Canadian Prime Minister Justin Trudeau.

Actress Sandra Oh and Lev Rukhin arrive for the state dinner on March 10.

The Obamas welcome Justin Trudeau and his wife Sophie Gregoire-Trudeau as they arrive for a state dinner at the White House.