Elizabeth Hurley 'back in a bikini' leaves fans desperate for diet and exercise regime details

Elizabeth Hurley has lit up her Instagram comments after sharing a video of herself posing in a bikini.

The 57-year-old actor regularly posts images and videos of herself modelling swimwear from her Elizabeth Hurley Beach Collection, but it's been seven weeks since her last bikini post waving goodbye to summer, and it seems as if her fans missed them.

Wearing a turquoise two-piece with gold hardware, Hurley revealed her toned stomach as she posed in front of a bathroom mirror.

Accessorising her beachy look with a with a pair of oversized blue framed sunglasses and with her hair in loose waves, the model captioned the video: “Back in a bikini.”

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And fans were clearly impressed with the clip, with many fans asking for the secret to Hurley's "timeless beauty".

"Ok, ok, okaaaay Miss Hurley! You neeeeed to share your (exact) daily food and exercise regime with us all so we have a teeny chance to look this incredible!" one user asked. "You look AH MAY ZING!!!"

"Has anybody ever looked better in a bikini than her?" another asked. "And she looks better every year."

"You look amazing," yet another agreed. "Has menopause not affected you at all ?? The rest of us have a couple tires around our waist!!"

Read more: Demi Moore, Liz Hurley and the 'mid-lifers' embracing womanhood with bikini photos

One look at Hurley's toned stomach would make any user think that the British actor spent hours in the gym to stay that way, but in fact she has a rather more unique way of staying in shape.

Rather than running for miles on end, or taking three spin classes a day, she claims to avoid routine classes or gym visits altogether.

“I don’t do any set exercise but can’t sit still for long…,” she explained to Mail Online. "I love working in my garden and am never happier than when wielding a strimmer. I walk my dogs a lot too."

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She broke down her routine a little more during an interview with Women's Health in October, revealing she does squats while she brushes her teeth to tone her legs and bum, before a 20-minute dog walk followed by hours of gardening.

"I do as much outside during the winter as I do during the summer," she added. "Not only do I feel, well, actually exhausted, but also I feel that I've got the leaves up, which is also a nice thing."

She added, "I'd rather do housework than go to the gym. I'd rather scrub a mirror—it does just as much."

Read more: Elizabeth Hurley promotes her swimwear line in turquoise triangle bikini

She admits to maintaining a very healthy diet, too: "I actually eat quite a lot, but very little junk or processed foods and don’t drink much alcohol," she said. "I try to eat lots of vegetables and never eat between meals."

The star added: "I’m at least 10 pounds heavier than I was 20 years ago but I don’t care. I probably eat a bit more now but I don’t eat takeaways and only drink sodas once in a blue moon. Life’s too short to be on a super-strict diet."

As well as her diet and fitness secrets, Hurley previously revealed her favourite anti-ageing skincare product which she “religiously” uses twice a day.

Speaking of her work with Esteé Lauder, the mum-of-one said: “I think I’ve been lucky because I’ve been with the company for 24 years so I’ve had really good products at my fingertips — and I use a lot of them.

Read more: Elizabeth Hurley reveals £16.15 beauty secret as she swaps bikinis for winter fashion staple

“My most favourite product of all has always been Advanced Night Repair which is a serum that I was given my first bottle of when I first joined the company in 1995, and I’ve used it religiously twice a day ever since.”

Shop now: Estée Lauder Advanced Night Repair Serum | £51.20 (Was £64) from John Lewis

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The actor continued: “Other products I particularly love are the La Mer products. They make beautiful skincare.

“I probably use more product now than I did 20 years ago and I’m looking forward to putting more on!”

She uses their Moisturising Soft Cream the most, but also enlists their classic Moisturising Cream depending on the time of year or if she’s had a hectic travel schedule.