The Modern Family actress headed to Nine Zero One hair salon in West Hollywood this weekend (15 November), and later emerged looking a bit like Barbie with her new bonce.
While Sarah was previously sporting light brown tresses with scattered sandy highlights, she's now lightened things up by going for a mega-bright, golden blonde hue.
And it's not just her colour she's switched up - the starlet also added heaps of length with super-long, tumbling hair extensions.
Showcasing her fresh tresses in a mirror selfie, Sarah wrote: "They say blondes have more fun. Let's see how this goes ;) Thank you @nikkilee901 for the colour and locks! Honestly the best out there @ninezeroone @riawnacapri."
She also gave us a peek of what her natural hair looked like before her salon visit, posting a photo of herself sporting a rather messy, shoulder-length mane...
Alongside her picture, Sarah added the caption: "Crazy hair, don't care before @nikkilee901 and @riawnacapri turned me into a golden goddess."
How does she manage to look totally stunning, even with the scruffiest of hairstyles?! It's not fair!
What do you think of Sarah's new blonde hair extensions? Let us know by commenting below as the best comment across the site each week wins £50!
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