Ivanka Trump attends the Women’s Entrepreneurship Finance event during the G20 leaders summit in Hamburg, Germany July 8, 2017. REUTERS/Michael Kappeler, Pool President Donald Trump said he asked his daughter Ivanka to take his seat at a G-20 Summit working session and her participation was "very standard."

"When I left Conference Room for short meetings with Japan and other countries, I asked Ivanka to hold seat. Very standard. Angela M agrees!," Trump tweeted.

Typically, a government minister would stand in for a head of state if they were unable to attend such an event, according to the Washington Post.

"Angela M" likely refers to Angela Merkel, the German chancellor and host of this year's G-20 Summit.

In the photo, Ivanka sat next to British Prime Minister Theresa May on her left, and Chinese President Xi Jinping and German Chancellor Angela Merkel on her right. The first daughter also serves as an official unpaid adviser to the president.

Kate Taylor + Svetlana Lukash

Trump followed up his tweet with another, comparing the situation to his former presidential rival Hillary Clinton and her daughter Chelsea.

"If Chelsea Clinton were asked to hold the seat for her mother, as her mother gave our country away, the Fake News would say CHELSEA FOR PRES!," Trump tweeted.

The picture of Ivanka at the G-20 meeting was first released by Svetlana Lukash, who is serving as a Russian emissary at the summit.

Lukash tweeted on Saturday that Ivanka "replaces Pres Trump at the #G20 table as he leaves for bilateral meetings."

The tweet was deleted around 10 a.m. ET.

Chelsea Clinton responded to the president's tweet Monday morning, asking, "Were you giving our country away?"

"Good morning Mr. President. It would never have occurred to my mother or my father to ask me. Were you giving our country away? Hoping not.," Chelsea tweeted.