Courteney Cox's long-time friend Laura Dern was also at the party, with the Friends star sharing a picture of the pair to Instagram. The Oscar-winning actress also shared the post on her account, captioning it, "Happy 4th from us gals."
Dern and Cox have been close for years, with the pair spending every Christmas Eve together.
Cox recently opened up about being singled out as the only cast member of the sitcom to be snubbed for an Emmy nomination.
"It always hurt my feelings … when every single cast member was nominated but me, it definitely hurt my feelings," Cox confessed alongside co-stars Jennifer Aniston and Lisa Kudrow on Howard Stern's Sirius XM show last week.
For playing Rachel Green in the sitcom, Aniston, now 52, won the gilded statuette for Outstanding Lead Actress in a Comedy in 2002.
Her win trailed Kudrow's, now 57, whose portrayal of quirky Phoebe Buffay earned her the gold for Outstanding Supporting Actress in a Comedy in 1998.
Fellow Friends headliners Matthew Perry, 51, David Schwimmer, 54, and Matt LeBlanc, 53, also each received nominations during the NBC series' 10-season run.
Aniston revealed in a recent interview that she was shocked by co-star Matthew Perry's "level of self-torture", while recording the show.
Perry admitted on the Friends reunion that he "felt like I was going to die" if he didn't get laughs from the studio audience during filming
"I didn't understand the level of anxiety and self-torture [that] was put on Matthew Perry, if he didn't get that laugh, and the devastation that he felt," Aniston, 52, told Today. "Which makes a lot of sense."
