“New week, new chapter, new hair”. For Sarah Harris, this has been a rather auspicious Monday.

Earlier this afternoon, the Studio 10 co-host posted a salon selfie to introduce us all to her latest hair update. Like Blake Lively before her, Harris has turned her blonde hair ‘ bronde ‘ — for mainly practical reasons, it seems.

“It’s growing so fast right now, I figured I might as well embrace my fetching Vegemite stripes. Means less time in the [Channel] Ten hair colour chair… Plus ‘bronde’ sounds funny and I like saying it,” the journalist explained.

Yep, we agree: bronde is fun to say.

"Thanks to @reneeelizabethtaylor for helping me cross back to the dark side... for now."

We'd like to award Harris 10 points for the timely Star Wars reference. Also, her first baby is due to arrive later this month, so it looks like Michelle Bridges isn't the only mum-to-be making a few hair tweaks before the big day.

As for the other big hair changes of the day...

Adele

Last week it was Kate Middleton, and now another beloved Brit has ditched her trademark long hair for something a little more choppy.

Adele, she of the magnificent voice and flawless eyeliner, performed on the finale of The X Factor last night — and she was upstaged by her own hair. Say Hello to her brand new look:

Niiiiiice. (Image: Facebook/The X Factor)

The 27-year-old's hair has been floating around shoulder-length for a while now, so this neck-grazing snip is a small but significant change. And for what it's worth, we like it very much.

Watch: Speaking of Adele's eyeliner, here's how you can nail it at home. (Post continues after video.)

Thought that was it for big hair changes today? Ha! How wrong you were.

Carrie Underwood

One of the few remaining long-haired women in Celebrity Land has bitten the bullet and got herself a lob. Or she's just retired her extensions. We're not quite sure.

US country singer Carrie Underwood has worn her hair in long, blonde, loose waves for her entire career, but it seems those days are over.

The 32-year-old nonchalantly posted the evidence on Instagram late last week, and didn't even reference her obviously changed appearance in the caption. But her followers were quick to detect a new length.

Another recruit to Team Long Bob

Check out the other recent hair transformations we're loving in this (exhaustive) gallery:

The best celebrity hair transformations

Megan Gale

Emma Watson

Emma Watson. Our favourite witch has lost a few inches - and we love this bob.

Kate Middleton

kendall hair pink

Kendall Jenner.

Jennifer Lawrence, November 2015.

Jennifer Lawrence

lisa wilkinson hair

Lisa Wilkinson

gwen stefani blue hair RS

Gwen Stefani

Ashley Tisdale

Ricki Lee

January Jones

January Jokes

Giuliana Rancic

Giuliana Rancic

Cara Delevingne

Cara Delevingne

Kim Kardashian

WOAH. Kimmy K shocked us all when she bleached the bejeezus out of her naturally ebony hair. The process reportedly took several hours.

Rachael Finch

Rachael Finch. Shorter, lighter - we love the former Miss Universe Australia's new hair.

Jesinta Campbell

Giuliana Rancic

Mindy Kaling

Lady Gaga

Sam Frost

Nicole Kidman

Rita Ora