The snap posted on Instagram shows the trio posing for a selfie together.
“A rare night and I love it,” wrote the actress.
Cox has shared several sentimental posts about Friends this year, which marks the comedy’s 25th anniversary.
She has previously shared images from her time on the show and with her co-stars Aniston and Lisa Kudrow.
Just a few days earlier, Cox shared a picture of herself with Friends star Lisa Kudrow (Phoebe Buffay) along with singer Charlie Puth and director Judd Apatow. “Trying to play it cool with all this heat,” she wrote.
The pictures come weeks after Friends celebrated its 25th anniversary on Sept. 22. Throughout the 10-season run, fans watched characters Monica, Rachel, Ross, Phoebe, Chandler and Joey settle into living in New York City and dealing with relationship and career drama.