Since joining Instagram in October, Jennifer Aniston has been having lots of fun on the social media platform.

One of her latest IG posts was dedicated to her longtime hairstylist Chris McMillan. She posted a fun throwback photo of them together as well as an updated one.

"Happy Birthday, Chrissy. We've come a long way, baby," Aniston wrote in her caption.

Aniston's fun photo also shows off one of her iconic "Friends" hairstyles, and fans couldn't get enough of it.

Since posting, this flashback moment has received more than 3 million likes and loads of comments from others who also wished McMillan a happy birthday.

On Sunday, the "Friends" star was honored at the 2019 People's Choice Awards.

"If I have any claim to this word 'icon,' it's only because I was able to be on an iconic show, with an iconic cast and an iconic haircut," Aniston said as she accepted the award. "'Friends' was truly — it was the gift of a lifetime, and I would not be standing up here without that amazing show, without those amazing five other actors, and with an audience who stuck with us."

She added, "You believed in us, you really did, and you believed in those very impossibly large apartments."