Ivanka Trump was slammed on social media Wednesday for supporting the rollback of an Obama-era initiative designed to reduce the gender pay gap, despite promising she would be an advocate for working women if her father won the White House.

".@IvankaTrump, self-styled champion of women, you just supported end of pay-equity rule," the Anne Frank Center, a human and civil rights nonprofit, wrote on Twitter. "Your mirror has two faces."

Actor George Takei thanked Trump "for nothing," while comedian Chelsea Handler also added to the fray.

"During Trump's speech in Missouri, he told Ivanka to stand up, and she did," she tweeted, referring to an event President Trump held in Springfield, Mo., to unveil his tax plan. "Congrats girl on finally standing up for something."

The Obama administration in 2016 introduced a measure that would have compelled businesses with 100 or more employees and federal contractors with at least 50 employees to disclose salary information as part of their federal reporting requirements, starting from 2018. But Office of Information and Regulatory Affairs czar Neomi Rao instructed the Equal Employment Opportunity Commission to stop the rule going into effect, the Wall Street Journal reported.

In a statement to the Journal, Ivanka Trump stood by her father's decision to dump the rule.

"Ultimately, while I believe the intention was good and agree that pay transparency is important, the proposed policy would not yield the intended results," she said in a statement. "We look forward to continuing to work with EEOC, OMB, Congress and all relevant stakeholders on robust policies aimed at eliminating the gender wage gap."

Earlier, Trump tweeted in April about the importance of wage equality.

"#EqualPayDay is a reminder that women deserve equal pay for equal work," she wrote. "We must work to close the gender pay gap!"