These are the most attractive grey-haired celebrities in the world according to the golden ratio

George Clooney, Steve Martin  and Daniel Day-Lewis are among the group of actors  known not just for their acting chops, but for their grey hair.

They are part of a group of older men who have aged well and who are known as silver foxes thanks to the colour of their locks.

Men, for a long time have been considered to 'get better' with age, with the likes of Clooney and Brad Pitt keeping their heartthrob status into their sixties.

But now, Hollywood women are embracing the grey too, with the likes of Glenn Close, Andie MacDowell and Meryl Streep dubbed 'silver vixens'.

Dr Barbara Kubicka, an aesthetic medicine physician, author, and founder of Clinicbe in Knightsbridge, said that the look can be associated with stability and knowledge.

Now, using the golden ratio - which is a list of proportions some people use to measure attractiveness, and analysing internet searches - Slingo has made a list of the most attractive silver vixens.

Glenn Close attends the 14th Governors Awards in Los Angeles in January showing a head of white hair

Meryl Streep (left) took the fourth spot on the list of most beautiful silver vixens, with the aesthetic doctor saying it was becoming more fashionable to embrace authenticity when it comes to beauty. Andie MacDowell is pictured right

Helen Mirren  let her natural hair run loose at the L'Oreal Show at Paris Fashion Week earlier this year 

 The golden ratio was a mathematical equation devised by the Greeks in an attempt to measure beauty.

While the ratio can by applied to anything, and was used by Leonardo Da Vinci for the the perfect human male body in his famous work the Virtruvian Man, it is also applied to the human face.

The premise behind this is that the closer the ratios of a face, body or room are to the number 1.62, the more beautiful it becomes.

These are the female equivalent, and according to the analysis, coming out on top of the Hollywood silver vixens is Glenn Close .

According to the stats, the 101 Dalmatians star has a facial ratio of 1.61 - which is just 0.01 below the golden ratio of 1.62.

Jodie Foster took second place, with a ratio of 1.64, which is just 0.02 above the golden ratio for facial beauty of 1.62.

Meanwhile, third place was shared by Meryl Streep and Helen Mirren whose facial beauty ratios of 1.59 and 1.65 put them just 0.03 off the golden ratio.

Helen Mirren stunned at this year's Billboard Golden Globes After Party held at the Beverly Hilton Hotel with her hair styled into a sleek bun 

The Devil Wears Prada actress ditched the blonde hair dye last year in favour of embracing white hair.

Now, at 74 years old, Meryl has sported many hairstyles throughout her career, but after revealing a natural white look in October last year, she quickly made headlines.

On the other hand, Dame Helen Mirren has rocked her natural white hair for some time.

From her sleek updo at this year's prestigious Golden Globes ceremony to her natural tresses running loose at the L'oreal Spring Summer 2024 show, the actress has showcased her stunning locks at numerous events.

'Some individuals find grey hair attractive due to its association with maturity, wisdom, and life experience, suggesting stability and knowledge,' she said.

However, she explained that a' double standard exists for men and women with grey hair', which she described as being 'shaped by social norms and media portrayal'.

Dr Kubicka explained: 'Grey hair in men is often labelled as 'distinguished,' enhancing attractiveness without compromising perceived vitality or youthfulness. 

'On the other hand, women with grey hair historically face more stigma, with societal pressures to dye their hair to maintain a youthful appearance.'

'Additionally, there is a growing appreciation for the natural beauty and authenticity of grey hair as a sign of self-acceptance and confidence, allowing individuals to stand out in a society that often emphasises youth and conformity.' 

She continued: 'The trend regarding grey hair oscillates between dyeing and embracing it, influenced by changing beauty standards and cultural shifts.'

According to the doctor, it has been 'the norm' to dye grey hair for many years - particularly when it comes to women 'aligning with societal expectations of youth and beauty'.

However, she said, there is a noticeable shift towards embracing natural hair. This includes grey hair, which she says is 'supported by a broader trend valuing authenticity, self-acceptance, and challenging traditional beauty standards'.

The doctor added: 'Celebrities play a significant role in shaping beauty standards and trends, influencing perceptions of grey hair. 

'Public figures who embrace their natural hair or choose distinctive styles inspire fans and the broader public to follow suit, fostering a more inclusive conversation about ageing and beauty and encouraging others to embrace their natural hair.'