Ivanka Trump turned heads on Saturday at the G20 summit by temporarily taking a seat at the big-kids' table when her father, President Donald Trump, stepped out for a bilateral meeting with Indonesian President Joko Widodo.

A White House official told DailyMail.com that the younger Trump's fill-in role was nothing out of the ordinary. 

UK Prime Minister Theresa May was seen leaving the G20 meeting room at one point, a source with knowledge of the summit's goings-on said, and her place was briefly taken by an aide. 

But when the 35-year-old former fashion executive sat at the table with Xi Jinping, Recep Tayyip Erdogan, Angela Merkel and Theresa May, Trump's enemies pounced.

Historian Anne Applebaum tweeted a complaint, denouncing 'an unelected, unqualified, unprepared New York socialite' being seen as 'the best person to represent American national interests.'