Another famous brunette has seen the light — well, the highlights, at least.

Australian columnist, blogger and racing royalty Kate Waterhouse seems to be going blonder and blonder at the moment.

RELATED: Cara Delevingne says bye-bye to her blonde hair.

Earlier today she Instagrammed a shot from Who magazine ‘s Most Beautiful People 2015 issue, which features Waterhouse with 10-month-old Sophia, her first child with husband, former footballer Luke Ricketson.

Little Sophia's sheer cuteness almost distracted us from her mum's lovely new hair... but not quite.

We're not sure when exactly Waterhouse, 31, made the brunette-to-blonde change; a perfunctory glance at her Instagram account suggests a couple of weeks. Regardless, it looks gooooood — though could you expect anything less from one of the country's most stylish women?

Take a look at some of Kate's recent snaps here (post continues after gallery):

Kate Waterhouse on Instagram

Waterhouse isn't the only famous woman to completely switch up her colour of late.

Cara Delevingne's gone from blonde to brown, Christina Hendricks returned to her blonde roots after years as a redhead, and Kim Kardashian went from black to white and now back again, apparently? We can't keep up.

RELATED: Rihanna has surprised us with this chic new haircut.

Take a look at the other major A-list cuts and colours we're obsessed with right now:

The best celebrity hair transformations

RihannaRihanna does good fringe. Image via Getty

Tyra Banks

Sarah Hyland

Idina Menzel

Christina HendricksMad Men star Christina Hendricks has gone back to her blonde roots. Image: Courtesy of Clairol.

Christina Aguilera

Image via Instagram.

Sophie Monk

Image via Instagram.

Hilary Duff

Hilary says mermaid, we say Kylie. Image via Instagram.

Behati Prinsloo.

Anna Paquin.

Lady Gaga.

Nicky Minaj

Anna Kendrick

Kaley Cuoco

Iggy Azalea

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