Presumptive Republican presidential nominee Donald Trump Donald John TrumpUS reimposes UN sanctions on Iran amid increasing tensions Jeff Flake: Republicans 'should hold the same position' on SCOTUS vacancy as 2016 Trump supporters chant 'Fill that seat' at North Carolina rally MORE on Wednesday started selling T-shirts featuring the slogan "I'm With You" to help fund his campaign.

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The shirts cost $35 on Trump's campaign website, and each features a large photo of Trump in the middle. Underneath his photo, the shirt says, "I'm With You," along with his campaign slogan, "Make America Great Again."

Trump coined the new phrase on Wednesday in an attempt to turn presumptive Democratic nominee Hillary Clinton Hillary Diane Rodham ClintonJeff Flake: Republicans 'should hold the same position' on SCOTUS vacancy as 2016 Momentum growing among Republicans for Supreme Court vote before Election Day Warning signs flash for Lindsey Graham in South Carolina MORE's "I'm With Her" slogan against her.

“She believes she’s entitled to the office. Her campaign slogan is, 'I'm with her,'" Trump said during a speech Wednesday in which he attacked Clinton in an attempt to cast her as a corrupt figure.

“You know what my response to that is? I’m with you, the American people. She thinks it’s all about her. I know it’s all about you.”

Earlier Wednesday, Trump tweeted using his new phrase, pushing the #ImWithYou hashtag.

"Hillary says things can't change," he tweeted.

"I say they have to change. It's a choice between Americanism and her corrupt globalism."