Ageing is an inevitable and natural part of life. It ought to be celebrated, indicating as it does that we've lived another year to become older and wiser, more full of knowledge and all that routine.

Yet many of us rail against any and all signs of ageing; from grey hairs to wrinkles, we buy creams, lotions, hair treatments and many more such ointments in a bid to halt those telltale signs.

And on Instagram, where many of us wile away more hours than we'd care to admit, there is no respite from the constant reminder that someone, somewhere is posting photos of such flawless effervescence they scarcely look real.

Halle Berry previously shared one of her intense workout videos on Instagram:

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There are, of course, those who are looking to redress the balance. The prevalence of 'plus-size' models in popular culture over recent years is an invaluable reminder to us all that beauty does not conform to one strict paradigm, and movements like the Grombre Instagram page are encouraging people to embrace their grey hair.

One person who seems utterly immune to the effects of ageing is Halle Berry. Fans commenting on just how youthful she looks to this day is a common theme on her Instagram page, and a picture she shared in celebration of her 54th birthday was no exception.

"54....life just gets better and better!" The actress wrote on the social media picture sharing app.

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And fans were delighted with the snap. "Happy birthday??54 looks good on you more like 24 years." One commenter wrote, while another added, "Happy birthday Halle!! ??The years have no effect on your beauty and charm. You are so beautiful!!!

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A third added, "Simply beautiful! Proves that living a good and healthy life makes you age well."

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According to Fox News, another well-wisher called the actress "immortal."

Back in 2018, Berry revealed the secret to her flawless skin during one of her social media PHIT TALKS - a regular segment she featured on her Instagram account that was dedicated to health and wellbeing.

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Commenting on her skin, the actress said regular cardio exercise is the secret to her good looks, explaining:

"I do believe that exercise is so related to healthy skin and how you not only feel but how you look. Cardio. Cardio Cardio. Getting the blood running through your body is so good for your complexion.

"Sweat, and the cheeks get naturally flushed."

Halle Berry is being called 'immortal' by fans after posting stunning photo celebrating 54th birthday