Celebrities like Justin Bieber and Kevin Hart are signing-on to take part in All In Challenge -- a fundraiser -- to help feed Americans affected by the ongoing coronavirus pandemic.

Philadelphia 76'ers co-owner Michael Rubin launched the fundraising auction where a athletes, artistes and celebrities offer once-in-a-lifetime experiences to fans.

Bieber, Hart and Dwyane Wade were among some of the first high-profile names to lend their names and prizes to the effort, reports dailymail.co.uk.

People can donate as little as $10 to earn a chance to win one of the fan experiences being offered by the celebrity of their choice.

Bieber is offering to fly out to the winner's house for a private show of his song, "One less lonely girl".

There's also a chance to be in Hart's next movie.

Since gaining traction on Tuesday, many of the celebrities are calling out some of their famous friends to get involved.

Other high-profile names taking part in the auction include lMeek Mill, Ryan Seacrest, Rob Lowe, Robin Thicke and Alex Rodriguez.