Rep. Alexandria Ocasio-Cortez slapped back at ​British journalist Piers Morgan after he mocked the New York Democrat’s bartending past while defending Ivanka Trump for traveling to the G-20 summit.

​Morgan​ responded to a tweet Ocasio-Cortez posted late Saturday criticizing why the First Daughter and her husband, Jared Kushner — both unpaid White House advisers — attended the meeting of world leaders in Japan last week.

​”Could be worse​ ​… Ivanka could have been a bar-tender 18 months ago​,” Morgan, the winner of “The Celebrity Apprentice” in 2008, wrote Sunday in response to Ocasio-Cortez​’s tweet.

​The first-term House member tended bar and worked as a waitress at a restaurant in Union Square before her stunning defeat of incumbent Rep. Joe Crowley in the June 2018 Democratic primary race.

Ocasio-Cortez that would “make government better – not worse.”

​”Imagine if more people in power spent years of their lives actually working for a living. We’d probably have healthcare and living wages by now​,” she said. ​

Ocasio-Cortez slammed Ivanka for ​​​appearing at the G-20 summit with her father, saying that “being someone’s daughter isn’t actually a career qualification.”​

“It hurts our diplomatic standing when the President phones it in & the world moves on,” she continued.

Ivanka and Kushner were among the White House contingent that traveled to Japan for the summit where Trump met with Russian President Vladimir Putin and Chinese leader Xi Jinping.

​The married couple also accompanied the president to South Korea for his meeting with North Korean leader Kim Jong Un during a historic ​visit to the Demilitarized Zone.

Trump became the first sitting US president to cross the border into North Korea.