Kudlow: Zuckerberg should stop wearing 'hoodies and dungarees'

President TrumpDonald TrumpKinzinger says Trump 'winning' because so many Republicans 'have remained silent' Our remote warfare counterterrorism strategy is more risk than reward Far-right rally draws small crowd, large police presence at Capitol MORE's chief economic adviser, Larry Kudlow, offered Facebook founder and CEO Mark ZuckerbergMark Elliot ZuckerbergHillicon Valley — Facebook 'too late' curbing climate falsities Facebook draws lawmaker scrutiny over Instagram's impact on teens How social media fuels U.S. political polarization — what to do about it MORE fashion advice ahead of his upcoming Capitol Hill testimony this week, saying he should stop wearing "hoodies and dungarees."

"Is he going to behave like an adult? As a major corporate leader? Or give me this phony bologna, what is it, hoodies and dungarees? What does that kind of signal sell?" Kudlow told reporters at the White House on Monday. 

"I think I could help him clean up his act," he continued. 

Zuckerberg donned a suit and tie to meet with lawmakers on Capitol Hill ahead of his testimony on Tuesday. 

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Zuckerberg will testify before the Senate Commerce and Judiciary committees about Facebook's use of user data, following revelations that political contractor Cambridge Analytica used Facebook to obtain information on 87 million Americans without their consent. 

He will also testify on Wednesday before the House Energy and Commerce Committee. 

Zuckerberg is slated to apologize to Congress, according to the prepared testimony released by the House panel.