Some people can barely match their own socks when they wake up in the morning. Jennifer Aniston and Justin Theroux, though, are not these people: instead, they wake up, source a flawless ensemble from their wardrobes for themselves, before effortlessly coordinating with one another, too.

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We saw it as they wandered through Paris earlier this year, dressed in complimentary beige coats and gold-rimmed aviator sunglasses.  We immediately noticed their coordinating looks at Louis Vuitton’s collaboration with Jeff Koons at the Louvre (she donned a leather bustier, he opted for tight leather trousers – far more successfully than her on-screen beau, Ross Geller, we hasten to add).

And let’s not forget every single red carpet moment they’ve had since: it’s nothing but matchy-matchy chic, all the livelong day.

But while it may appear as though the duo are intentionally dressing to look like one another, Aniston swears the striking resemblance is not on purpose.  

When asked for the secret behind their joint aesthetic, she told people.com: “I don’t think we have a collective style, I think he has a very specific style.

“I think it’s just… luck?”

However, after a moment, Aniston changed her answer – and, while she stressed once again that she and Theroux aren’t aiming for slightly cringe #coupledressing goals, she admitted that their coordinated red carpet looks aren’t purely down to chance.

“There’s definitely, we, I think it’s from the inside,” said Aniston. “It all comes from the inside.”

And the pair’s effortless twinning action may actually reveal something about them: experts have proven, time and time again, that harmonious dressing is a subconscious thing, generally occurring about six months into a relationship.

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Speaking to The Huffington Post Australia, Dr Nikki Goldstein explains: “We tend to want to fit in with the person we are dating. Yes we are all unique but we want to, as a couple, look united and as if we ‘fit’.

“You conform to the environment that you're in, so it's only natural that when you're dating someone – even automatically without knowing [you do it] – you will start to change your style so that you blend in with them.”

In short, it’s a romantic way of letting your partner know that you admire them and their choices. But, if you find yourself intentionally dressing the same as your beau, Goldstein says it’s definitely cause for concern.

“If it gets to the point where you have lost your sense of identity, then you have to wonder whether you are you taking on these attributes because you're really great as a couple, or because you want so desperately for the relationship to work that you need to change everything about yourself to fit in so it does,” says Goldstein.

Or, to put it more bluntly, trying to look like your beloved is a bad idea, because you lose sense of your own identity.

Subconscious or not, we can’t imagine many pulling it off with quite as much aplomb as Aniston and Theroux anyway.

Images: Rex Features