Courteney Cox has taken to Instagram to share a never-before-seen photo of her and her Friends co-stars.

The 54-year-old actress clarifies in the caption that the snap had been taken before the show even aired, writing, "The one where the six of us went to Vegas and no one knew we were F.R.I.E.N.D.S yet."

For fans, it provides a window into what their friendship was like before they really 'made it' in Hollywood.

Remember when Lisa Kudrow And Courteney Cox had a surprise Friends reunion on the Ellen show?

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Think about it - when the photo was taken, no one could have guessed what a phenomenal worldwide hit Friends would go on to become.

The sentimental snap shows the actress with the other five leads of the NBC sitcom (including Jennifer Aniston, David Schwimmer, Matthew Perry, Matt LeBlanc and Lisa Kudrow) having a blast together in a private jet.

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The photo was taken during a group trip to Sin City organised by director James Burrows. While the cast and crew had already started filming for the show - that would go on to have a wildly successful 10-year run - none of the episodes had yet been seen by the public.

Courteney Cox recreates the famous "PIVOT" scene from Friends:

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In a televised 2016 special made in honour of the TV director, Burrows talked about his thinking behind taking the cast on a trip to Vegas.

"We ate at Caesar’s Palace in Spago. I had me and six of them and I said -- I don’t know why I said this -- I said, 'This is your last shot at anonymity. Once the show comes on the air, you guys will never be able to go anywhere without being hounded,'" Burrows recalled, adding that he was certain the series would be a smash hit. "I knew the show had a chance to really take off."

Courteney Cox just posted the ultimate Friend throwback.

The 55-year-old shared a picture of the entire gang - Jennifer Aniston, Matthew Perry, David Schwimmer, Matt LeBlanc and Lisa Kudrow - looking cheerful as they ate dinner together before filming the last ever episode of the hit sitcom. She also posted a picture of the final script, and it's safe to say that Friends fans just loved it.

Watch as Courteney Cox tries the Friends Instagram filter:

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Cox, who played Monica Geller, captioned the sweet snap: "The Last Supper” before taping “The Last One” on Jan 23, 2004. #tbt #friends."

Naturally, her co-stars were quick to comment on the throwback post. Jennifer Aniston, who portrayed Rachel Green, was one of the first cast members to comment, with a slew of crying emojis, and Lisa Kudrow, also known as Phoebe Buffay, simply added "Awwww" alongside a shocked emoji.

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And of course, fans of the show just loved the behind the scenes look. "This just got me emotional, I wonder do they know how infectious they all were in our upbringing," wrote one Instagram user, while another corroborated "Was watching this last night."

Another user added, "Stop teasing us and make this s**t happen again @courteneycoxofficial @jenniferaniston thx [sic].

[[imagecaption|| Credit: Instagram / Courteney Cox]]

[[imagecaption|| Credit: Instagram / Courteney Cox]]

In other news, the actress recently revealed that she had her fillers dissolved, admitting that she "didn't look like [herself]".

"I would say it’s a common thing you go through as you age, especially in Hollywood," the 54-year-old disclosed when speaking to PEOPLE. "You have to accept getting older, and that’s something that I had a hard time doing."

The actress - who is now the new face of L'Oréal Paris' Super Preference #OWNINGIT campaign - added that she started getting the injectable fillers because she "wasn't pleased with myself and the way I looked."

“[I tried] to keep up with time in a way that was anything other than maintenance. I didn’t realise it until one day I kind of stepped back and went, ‘Oh shit. I don’t look like myself.'”

There really is no doubt that Jennifer Aniston is one of a kind.

The Friends star has been firmly in the spotlight of the public eye for well over 20 years now, but fans are just as adoring of her as they ever have been.

And lately, we've been treated to more Jen updates than ever before, after the actress joined Instagram, delighting her legions of fans with everything from flawless selfies to Nostalgic Friends reunion posts.

Jennifer Aniston watches her ex Brad Pitt deliver his Golden Globes speech:

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Recently, Jen took to Instagram to welcome her friend and Friends co-star Matthew Perry to Instagram with a brilliant set of throwbacks featuring the pair. She wrote, "I'm shocked Matty is the last to join Instagram, considering he was a uh... umm....oh crap ??‍♀️ Oh! A computer processing TRANSPONSTER. #FBF"

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And then, the 51-year-old, who just celebrated her birthday, posted a series of stunning snaps of herself from a recent photoshoot, writing;

"Thank you @interviewmag for this birthday surprise. I had no idea this would be coming out today. Feeling proud and honored to be celebrating with this cover. Thanks to the Interview team for celebrating women at every age... turns out 51 is pretty fun. And thanks to @nickkharamis, @melzy917, @alique_studio, @mrchrismcmillan, @gucciwestman — and my sister from another mister Sandy Bullock for talking to me about whatever the hell we were talking about. I love you so much."

And it's fair to say her co-star Courteney Cox was pretty excited by the photoshoot:

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Courteney Cox later took to her own Instagram page to post a brilliant birthday tribute to Jennifer Aniston, sharing a picture of the pair with matching haircuts and glasses. She wrote, "No matter how hard you might try... there’s only one Jennifer Aniston. Happy birthday my dear friend @jenniferaniston! I love you!♥️♥️♥️"

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Courteney Cox recently shared this awesome bikini video of herself in a pool:

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Happy Birthday, Jen!

Accepting that our appearance is going to change as we get older is a tough thing to do.

One person who has decided to own her age though is Courteney Cox, who had all of her fillers dissolved two years ago when she looked in the mirror and "didn't look like herself".

Speaking in a new interview, the 54-year-old admitted that she had a hard time embracing her looks as she aged and resorted to injections used to fill out wrinkles and creases in the skin.

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However, now the Friends star has stopped turning to fillers and is working on accepting herself as she is.

"I would say it’s a common thing you go through as you age, especially in Hollywood," she told People. "You have to accept getting older, and that’s something that I had a hard time doing. [I tried] to keep up with time in a way that was anything other than maintenance. I didn’t realize it until one day I kind of stepped back and went, 'Oh sh*t. I don’t look like myself.'"

She continued: "So now I just embrace who I am and getting older with what God gave me, not what I was trying to change. The things that I am not as comfortable with myself, they’re things that I continue to work on to grow and change."

It's not the first time the Friends star has spoken out on the subject. In 2017, the Cougar Town actress claimed that she looked "fake" with fillers.

Matt LeBlanc as Joey Tribianni, Courteney Cox as Monica Geller, Jennifer Aniston as Rachel Green, Matthew Perry as Chandler Bing, Lisa Kudrow as Phoebe Buffay and David Schwimmer as Ross Geller." width="850" height="450" />[[imagecaption|| Credit: Getty]]

"I think that I now look more like the person that I was (before adjustments). I hope I do," she said in an interview with New Beauty. "Things are going to change. Everything's going to drop. I was trying to make it not drop, but that made me look fake."

The 54-year-old added that once you dip your toe into the water of facial injections, it's hard to stop - but she's glad she eventually came to the realisation that fillers "were not her friend".

"The next thing you know, you're layered and layered," she explained. "You have no idea because it's gradual until you go, 'Oh, s---, this doesn't look right'. You need movement in your face, especially if you have thin skin like I do. Those aren’t wrinkles—they’re smile lines. I’ve had to learn to embrace movement and realize that fillers are not my friend."

It's great to hear that Courteney eventually learned to accept herself - and looks fab for it!

Although the star's relationship with fillers didn't last, her friendship with Jennifer Aniston sure did - this was shown when she shared an adorable birthday tribute to her former co-star on social media this week.

The series finale of Friends aired 15 years ago, but thanks to social media, the stars will always be there for you. Remember when David Schwimmer posted a hilarious video response to his beer-stealing lookalike? How about when Courteney Cox recreated the iconic 'pivot' scene on Instagram? It's not a Friends reunion, but we'll take it.

On Sunday, Courteney Cox, Jennifer Aniston and Lisa Kudrow reunited for a girls night out, and although no one wore a turkey on their head, it looks like they had a great time. Courteney shared a photo of the trio, writing "Trying to figure out what to say on Instagram....#gotnothing #friends #girlsnight."

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Lisa Kudrow also shared a photo on Instagram, writing, "Halfway there... #girlsnight #." If only David Schwimmer, Matthew Perry and Joey LeBlanc showed up! Plus James Michael Tyler (Gunther), Aisha Tyler (Charlie Wheeler) and Jon Haugen (Ugly Naked Guy). (Hey, we can dream.)

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And just in case you doubt their real-life friendship, the Friends gals met up on June 15 for Courteney Cox' 55th birthday. "How lucky am I to celebrate my birthday with these two???" Courteney gushed in the caption. "I love you girls. So much." Could they be any more adorable?

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These photos are sure to kickstart rumors about a Friends revival, but such an event seems unlikely. While speaking to Rolling Stone, the show's co-creator Marta Kauffman said there are "several reasons" not to do a reunion. "One, the show is about a time in your life when your friends are your family. It’s not that time anymore," she said. "All we’d be doing is putting those six actors back together, but the heart of the show would be gone."

Watch Jennifer Aniston reveal how she feels about a potential Friends reunion:

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But although Kauffman is skeptical about a reunion's quality, the cast is down. On a recent episode of Ellen, Jennifer Aniston said, "Okay, why not? 'You know what, because listen, I told you this. I would do it. The girls would do it. And the boys would do it, I'm sure. Listen. Anything could happen." Until then, there's always social media.