NY Post writer calls Ivanka Trump a 'filthy liar,' mocks her appearance. It backfired hard.

Ivanka Trump appeared on Monday's airing of "Fox & Friends" and was excoriated by New York Post columnist John Podhoretz, who called her a "filthy liar."

Speaking about working in the White House, Ivanka admitted that working alongside her father, President Donald Trump — who is widely criticized by the left — is difficult.

“It is hard,” Ivanka said. “And there’s a level of viciousness that I was not expecting. I was not expecting the intensity of this experience.”

She added, "Some of the distractions and some of the ferocity, I was a little blindsided by it on a personal level. For me, I’m trying to keep my head down and not listen to the noise and just work really hard to make a positive impact.”

Podhoretz, however, accused Ivanka of being a "filthy liar" in a tweet that slammed both her and her father.

“Her father said Ben Carson was a psychopath and Ted Cruz’s father killed JFK and she wasn’t expecting viciousness," Podhoretz wrote. "She’s a filthy liar."

The 56-year-old Podhoretz also mocked 35-year-old Ivanka over her appearance.

In a second tweet, Podhoretz added, "Ivanka’s hair on Fox and Friends looked like it went through a pasta roller."

After his comment about Ivanka's hair, Twitter erupted in anger over what many called Podhoretz's "sexist" comments.

See some of social media's reactions to Podhoretz's tweets below, as well as Ivanka's full segment on "Fox & Friends" below.

I was briefly taken aback by the level of viciousness directed at her by you, but I quickly got over it.

— Ian Gregory Veitch (@VeitchIan) June 12, 2017

Yea, not really necessary.

— Kelly Occhiuzzo (@KOKO820) June 12, 2017

sexist

— s dev (@alcamus) June 12, 2017

trolling score - 3.25 out of 10.

— MOMAman (@crypticcrosser) June 12, 2017

Vicious.

— Octavio (@OctaveFilms) June 12, 2017

That's mean

— Mary Farley (@MaryFarleyETC) June 12, 2017

Well, at least she has hair ahem....

— Heather Champion (@winningatmylife) June 12, 2017

it's called straightening; if you haven't notice she's not the only one who has that style. Where have you been. 😊

— Elizabeth (@destiny_113) June 12, 2017

You are the most petty person on twitter. A great ambassador for New York.

— the fourth (@nabby60) June 12, 2017

You shouldn't be attacking anyone about their looks. Something about glass houses or shiny bald heads I think.

— Neil Axelrod (@NeilAxelrod) June 12, 2017

I'm so happy to realize that someone like you never dated a beautiful woman. You've most likely had the dregs of society.

— Carlos Danger (@Knowledge_NYC) June 12, 2017

Since when has this toddlers' behavior become acceptable for a senior citizen? Get your act together man.

— LookUpToTheSkies (@LucStenekes) June 12, 2017

Sounds like you have hair envy? Too bad a fat bald slob has to attack a woman

— jimmylme (@jimmylme) June 12, 2017

Update: The original headline called John Podhoretz a liberal. He is not. The headline has been edited to fix that error.