If you haven't already started and/or finished the Friends binge-watch now that every season is available Netflix, the post-holiday slump lends a good reason to start.
It's easy to lose track of time when glued to your couch for days on end, so perhaps you missed the subtle (and not so subtle) ways the characters have changed their looks over the years. To help, we compiled a look at how each character transformed season to season.
Rachel may have inspired the 'do of the '90s, but Phoebe had enough hairstyles to fill a beauty magazine.
Rachel
Original image has been replaced.
Credit: Mashable
Ross
Original image has been replaced.
Credit: Mashable
Monica
Original image has been replaced.
Credit: Mashable
Phoebe
Original image has been replaced.
Credit: Mashable
Joey
Original image has been replaced.
Credit: Mashable
Chandler
Original image has been replaced.
Credit: Mashable
BONUS: The entire 'Friends' series in less than 3 minutes