HLN’s S.E. Cupp defended Martha MacCallum after the Fox News anchor was criticized for being “classless” and “unprofessional” by an attorney for adult-film actress Stormy Daniels for announcing he had pulled out of an interview scheduled for Tuesday night.

MacCallum, anchor of “The Story,” had called out Daniels’s attorney, Michael Avenatti, for the cancellation on the air, noting that he had told CNN on Sunday that Fox doesn’t “seem to want me to be on their shows much.”

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Avenetti in a post on Twitter criticized MacCullum, which prompted the pushback from Cupp, the host of “Unfiltered” on CNN sister network HLN.

“Nah uh. You won’t find a person who agrees with you,” wrote Cupp to her 391,000 followers in response to Avenatti.

“@marthamaccallum is ALL class and a pro. You can be aggrieved about the booking without using baseless ad hominem attacks. Which, incidentally, do nothing for your client. Remember her, your client?”

Nah uh. You won’t find a person who agrees with you. @marthamaccallum is ALL class and a pro. You can be aggrieved about the booking without using baseless ad hominem attacks. Which, incidentally, do nothing for your client. Remember her, your client? https://t.co/mmKmF4HIKk

— S.E. Cupp (@secupp) April 24, 2018

Avenetti responded to Cupp not long after, stating he had represented Daniels, whose real name is Stephanie Clifford, “admirably” while calling Cupp’s defense of MacCallum “bush league.”

You need not lecture me about my client, who has been represented admirably. Check the scoreboard. It was bush league to call me out and make it look like something it wasn’t just so she could represent and advocate for her “clients” – Mr. Cohen and Mr. Trump.

— Michael Avenatti (@MichaelAvenatti) April 24, 2018

Avenetti, who has conducted dozens of interviews on CNN and MSNBC, also challenged Sean Hannity to “a straight up discussion by two men” about his client’s case against President Trump.

“We don’t agree on everything but we are both street fighters @seanhannity, which means something. Let’s set a booking so I can come on the show to talk about the case and the issues in the case. No BS. Just a straight up discussion by two men. Thanks for considering it,” Michael Avenatti wrote to his 240,000 Twitter followers on Monday.

The challenge comes one week after Hannity was revealed in a Manhattan courtroom to be Cohen’s third client.

Hannity, an opinion host and staunch supporter of Trump, maintains that his legal relationship with Cohen was “minimal” and that he was never invoiced for any legal services.

Daniels is suing Trump over a $130,000 payment she received weeks before the 2016 election.

The payment was part of a nondisclosure agreement, which Daniels says was regarding an affair she says she had with Trump a decade earlier. The White House denies the affair.

Avenetti last appeared on Fox News on March 20 on “Fox News at Night” in an interview with anchor Shannon Bream.