HOUSTON (AP) — Stars including Kevin Hart, Katy Perry and country singer Chris Young are lining up to help raise money for flood relief efforts in Houston.
Hart has pledged $25,000 to victims of Hurricane Harvey.
In an Instagram video posted Sunday, Hart said he was starting a celebrity challenge to donate money to the cause.
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Beyonce, Jay Z, Justin Timberlake, Dwayne "The Rock" Johnson and Jerry Seinfeld are among the stars he called on to do the same.
Young said in a Twitter video that he has started an online fundraiser for the Red Cross and donated $100,000 to it.
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Perry urged viewers to donate while hosting MTV's Video Music Awards on Sunday night and tweeted a link to the Red Cross' donation efforts to more than 100 million followers on Twitter.