Fans applauded the stars in the comments, with one person saying the photo showed “beauty without filters and enhancers”.
Another said they “love seeing my fave Hollywood celebrities ageing with such grace and beauty”.
The actors have been close friends since they starred together in the 2000 Charlie’s Angels reboot.
The stars have both discussed cosmetic procedures in the past, with Diaz, 49, saying she had tried Botox before but didn’t like what it did to her face.
“It changed my face in such a weird way that I was like, ‘No, I’d rather see myself, I’d rather see my face ageing than a face that doesn’t belong to me at all.’”
Meanwhile, Barrymore said in February she hadn’t had any work done.
“I’ve never done anything to my face and I would like to try not to…The thing that I do care about and I do feel is still relevant to my life is the face,” she said.