Celebrities including Chris Rock, Sarah Silverman and Amy SchumerAmy Beth SchumerPaul Rudd hands out cookies to long lines of early voters waiting in rain Star-studded 'Telethon for America' seeks to get out the vote All-star celebrities to host TV special to 'celebrate the power of voting' MORE are stripping down for a revealing new public service announcement (PSA) aimed at raising awareness about so-called naked ballots.

"I know what you're thinking — you're thinking, Ruffalo, put your clothes on," actor Mark Ruffalo, appearing sans shirt, says into the camera in the video released Wednesday from the anti-corruption nonprofit, RepresentUs.

"If you don't do exactly as I tell you," Silverman says, "then your ballot could get thrown out."

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The au naturel Hollywood stars bring viewers' attention to laws in 16 states that require voters to insert their mail-in ballots into two separate envelopes in order to be counted.

"Naked ballots — you don't want one of those!" comedian Chelsea Handler exclaims.

Other entertainers featured in the unclothed PSA include: Tiffany Haddish, model Naomi Campbell, "Frozen's" Josh Gad, Sacha Baron Cohen as his character, Borat, and Ryan Michelle Bathe. 

"This is not a partisan issue; it affects all people planning to vote by mail," RepresentUS co-founder and CEO Josh Silver said in a statement. "We’re grateful to this committed and talented group for making an eye-catching video so that everyone understands what they need to do to ensure their vote is counted.”

Last week, a trio of female politicians from Pittsburgh went topless for their own awareness campaign about naked ballots, warning Pennsylvania voters to make sure their mail-in ballots get counted.

"Immediately when I heard the term naked ballots, and being a woman in the male-dominated environment of politics, where they are always trying to control our bodies, I thought, ‘Why not take some control back? And also get the voters’ attention,” Bethany Hallam, a Democratic councilwoman at large for Allegheny County, told the Guardian.

Mail-in voting is expected to see a surge this year as many voters seek to limit their potential exposure to the coronavirus.