As Lauren Conrad’s BFF and partner-in-crime on Laguna Beach (which, BTdubs, is making a comeback) and later, The Hills, (did you catch the anniversary special?), Lo has always struck us as the quintessential Cali girl: blonde, bronzed and perky as can be.

NEW YORK, NY - SEPTEMBER 17: Television personality Lo Bosworth attends the Samsung Hope for Children Gala 2015 at Hammerstein Ballroom on September 17, 2015 in New York City. (Photo by Bryan Bedder/Getty Images for Samsung)

Which is why we were completely floored to stumble across these pics of her as — wait for it — a sassy brunette!

Showing off her new ‘do on the ‘gram, Lo made things official with her caption: “Card carrying member of the brunette club,” she wrote.

Fans certainly weren’t mad at the change — one even compared her new look to a Friends-era Jen Aniston — a compliment if we’ve ever heard it, considering Jen WAS named the most beautiful woman in the world by People this year!

View this post on Instagram

Hello, SaturYAY 💓

A post shared by Lo Bosworth (@lobosworth) on

The look seems to agree with Lo, as well, who puckered up for the camera with her new locks this morning, writing, “Satur-YAY.”

While we think she looks great both ways, this new hue is a good choice for fall, which, as we can all begrudgingly acknowledge, is right around the corner (blurgh).

Rock it, Lo!

Are you team brunette or team blonde? Let us know over @BritandCo!

(Photos via Bryan Bedder/Getty)