Jennifer Aniston's nude portrait is being auctioned for COVID-19 relief

One of Jennifer Aniston's most famous portraits is heading to the auction block for COVID-19 relief.

Aniston, 51, revealed on Instagram over the weekend that photographer Mark Seliger organized the auction.

"My dear friend @markseliger teamed up with @radvocacy and @christiesinc to auction 25 of his portraits - including mine - for COVID-19 relief," the "Friends" alum announced.

The 1995 photo was taken during the height of "Friends" mania when Seliger was tasked to photograph the entire cast of the acclaimed sitcom, he explained to Christie's. The nude photograph, where Aniston was directed to try something a little more "provocative and edgy," was a product of that photo shoot and later became one of Seliger's most famous works.

Aniston said, "100% of sales proceeds of this portrait will go to @NAFClinics, an organization which provides free coronavirus testing and care nationwide to the medically underserved."

"Thank you again to Mark for allowing me to be part of this," she sweetly concluded.

Other photos Seliger is auctioning for Red Carpet Advocacy and Christie's auction house is Julia Louis-Dreyfus' nude shot in which the Constitution is written on her back, Amy Schumer's cancan with stormtroopers and Keith Richards' 2011 cover for GQ.

You can bid for the portraits up for auction on RADArt4Aid's website. As of Tuesday morning, the current bid on Aniston's portrait is at $6,500.

The auction ends June 12.