Historian Anne Applebaum took to Twitter to denounce what she described "an unelected, unqualified, unprepared NY socialite" being seen as "the best person to represent American national interests".
A photo posted to Twitter showed her sitting between Chinese President Xi Jinping and UK Prime Minister Theresa May, one seat down from Russian President Vladimir Putin. One official who was watching the session said she has taken her father's place at the table on at least two occasions today and did not speak.
It does not appear that Trump spoke at the session, but her presence at the table was met with widespread criticism on social media.
Seated at other seats nearby Ivanka Trump were German Chancellor Angela Merkel and Turkey's Recip Tayyip Erdogan. "And it is known that she works at the White House and carries responsibility for certain initiatives", Merkel said (via Fortune).
Others came to her defense and said the outrage is an overreaction.
The president made the announcement at a women's entrepreneurship finance event at the G20 summit in Hamburg, Germany.
Ivanka Trump has filled in for her father, sitting with world leaders during the G-20 summit.
Ivanka has her share of challenges contending with her father and he knows it. She took a formal leave of absence from her eponymous brand in January, but kept her ownership stake and moved the assets into a trust.
Trump says that, "Empowering women is a core value that binds us together".
It will also fuel claims of nepotism against the U.S. leader, who has promoted family members to top White House roles. I have to tell you that.
The president's daughter has received no shortage of criticism from both progressive and conservative observers since taking an active role in her father's administration.
Trump's 35-year old daughter is married to Jared Kushner, one of his top lieutenants, and is an accomplished businesswoman in her own right. "It might be the only bad thing going for her".
The family, including Ivanka's husband, Jared Kushner, have once again shown what they think of the rules of global politics: nothing.
At the summit in Hamburg, she and her husband participated at a bilateral meeting with Merkel.