Kudlow: Zuckerberg should stop wearing 'hoodies and dungarees'

President TrumpDonald John TrumpTrump rallies in Nevada amid Supreme Court flurry: 'We're gonna get Brett' Trump: 'Good news' that Obama is campaigning again Trump boosts Heller, hammers 'Wacky Jacky' opponent in Nevada MORE's chief economic adviser, Larry Kudlow, offered Facebook founder and CEO Mark ZuckerbergMark Elliot ZuckerbergFight looms over national privacy law Facebook teaming with nonprofits to fight fake election news China may be copying Facebook to build an intelligence weapon 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.