The former TOWIE star seems to be getting progressively further away from the blonde Essex girl we were introduced to when she first hit our screens in The Only Way is Essex.
And we have to admit, blonde, brown or almost-black, our Lydia can pretty much get away with them all...
While fellow Essex girl Amy Childs was going back to flaming red, Lydia was going through her own transformation, in the form of a richer, darker hair colour, thanks to Malcolm Murphy Hair in Leicester and Great Lengths extensions, which are also loved by the likes of Frankie Sandford, Rochelle Humes, Samantha Faiers and Abbey Clancy.
"5 hours in the hot seat @MalcMurphyHair new colour complete now in with my new @greatlengthsuk," Lydia tweeted yesterday (29 October).
She then showed off her new long, dark do on Instagram as she hopped in a taxi for a night out with the girls at swanky celeb haunt Nobu in London.
In a recent interview with Reveal, Lydia told us how she loves being a brunette and that having darker locks has totally changed her beauty routine.
"I experiment a lot more with my eye and lip colours now that I've dyed my hair darker," Lydia told us.
"When I was blonde I would only wear a red lip, but now I wear hot pinks, baby pinks and corals."
So, it looks like Lydia's dark side is here to stay.
But we really can't quite work out which is our favourite look on her.
We loved her as a bubbly blonde, but similarly she works dark hair pretty well, too.
Is there any colour she couldn't rock? Well, let's see if she's adventurous enough to attempt red...
Do you prefer Lydia's hair blonde, brown or almost black? Let us know your thoughts below. Our fave comment across the site each week wins £50!