Fans of the star were quick to tweet their amusement at the fact she 'broke' Instagram, with one user joking that Instagram was "on a break."
"The one where Jennifer Aniston joined Instagram with a FRIENDS reunion photo and broke the App. Literally. You can’t even follow her right now."
However, the account appears to be up and running again.
Despite the site crashing, Jennifer's joining of Instagram has been met with celebration.
According to People, Jennifer also follows her former co-stars on Instagram, as well as her ex-husband Justin Theroux - with whom she was with for seven years up until 2018.
Justin left a comment on her first post, writing:
Jennifer was welcomed to Instagram by her friend and fellow actor Reese Witherspoon, who commented:
“YASSSS!!! Welcome to Insta Jen!!!”