Kudlow: Zuckerberg should stop wearing 'hoodies and dungarees'

President TrumpDonald John TrumpJulián Castro: It's time for House Democrats to 'do something' about Trump Warren: Congress is 'complicit' with Trump 'by failing to act' Sanders to join teachers, auto workers striking in Midwest MORE's chief economic adviser, Larry Kudlow, offered Facebook founder and CEO Mark ZuckerbergMark Elliot ZuckerbergOn The Money: Trump downplays urgency of China trade talks | Chinese negotiators cut US trip short in new setback | Trump sanctions Iran's national bank | Survey finds Pennsylvania, Wisconsin lost the most factory jobs in past year Hillicon Valley: Lawmakers say Zuckerberg to 'cooperate' on antitrust probes | Dems see victory after McConnell backs election security funds | Twitter takes down fake pro-Saudi accounts Lawmakers say Zuckerberg has agreed to 'cooperate' with antitrust probe 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.