Ryan Reynolds, Justin Trudeau, Shania Twain, more celebrate Canada Day

George Pimentel/WireImage; Bill Clark/CQ Roll Call; George Pimentel/WireImage

On this July 1, which marks Canada Day, celebrities born in America's northern neighbor show their pride and commemorate the 150 years since the country's confederation. Though, Ryan Reynolds jokes "150 is nothing."

"It's like, Robert Pattinson's age in the Twilight Movies," the Deadpool star, born in Vancouver, tweeted Saturday. "Happy Birthday I guess."

William Shatner, Shania Twain, and Arrow actor Stephen Amell, more stars of Canada, raised their emoji flags high on social media. Shatner posted a message in French, while Twain called it a "special one today" and Amell commemorated the birthday of his buddy, actor Nick Nicotera.

In a message posted to Twitter, Canadian Prime Minister Justin Trudeau noted his commitment to supporting diversity. "This country has given us so much to be thankful for, and our greatest pride is that you can come here from anywhere in the world and build a good life," he said. "We don't care where you're from or what religion you practice or who you love — you are all welcome in Canada."

According to the Toronto Star, Trudeau met with Indigenous activists who erected a teepee on Parliament Hill Saturday. The prime minister also addressed them in his statement.

"Diversity has been at the very core of Canada for centuries," Trudeau continued. "It is the foundation on which our great country was built, but today, while many of us celebrate Canada 150, others do not. Indigenous peoples in this country have faced racism and oppression for centuries, since early explorers believed they had found a new world. As a society, we must acknowledge and apologize for past wrongs and chart a path forward, one that promises a bright future for all Canadians."

Will Arnett thanked him for "celebrating diversity and inclusion," while Trudeau welcomed a visit with Prince Charles.

President Trump tweeted early in the morning, "Happy Canada Day to all of the great people of Canada and to your Prime Minister and my new found friend @JustinTrudeau." (His social media celebration was short-lived; POTUS then followed that message with another attack on MSNBC's Mika Brzezinski and Joe Scarborough, calling the Morning Joe hosts "crazy" and "dumb as a rock.")

See more Canadian and non-Canadian celebrities commemorating the day below.