Living Proof/Instagram

This Throwback Photo Of Jennifer Aniston Is Living Proof She’s A Hot Brunette

This 'do is *so* not the Rachel we're used to.

If we put together a vote-off for celebrity superlatives right now, Jennifer Aniston would probably win the Best Hair prize by a landslide. Because ever since she popped onto the scene 21 years ago as Rachel Green in "Friends," she's been straight running the mane game.

But before The Rachel was a thing -- that is, that voluminous shoulder-length cut with chunky layers and top highlights that was suddenly EVERYWHERE in the mid-'90s -- Jenny A had a totally different look going on.

Check it: On Thursday (May 21), Aniston joined in on the #TBT tradition as she took over the Instagram feed for Living Proof, a hair care brand she helped found, posting this oldie-but-goodie snapshot of herself with long-time pal, actress Andrea Bendewald.

Is it just us, or did it take a triple-take to really recognize her here? (Of course, she's still a stunner with brown locks.)

Thanks to Aniston's Insta-takeover, we also learned a few other things about her.

Like the fact that she gets the most beautiful, scrumptious breakfast plates ever. Because of course.

AND she feeds her doggy pickles, which ... awesome.

Plus, her other dog apparently likes to go gyming with her because this fur baby is too cool for school.