Elizabeth Hurley fans praise star's age-defying beauty in throwback underwear photo

Elizabeth Hurley posted the bikini throwback on her Instagram account. (Getty Images)
Elizabeth Hurley posted the bikini throwback on her Instagram account. (Getty Images)

Elizabeth Hurley is no stranger to sharing images of her toned body online. From promoting her own bikini line to sharing holiday snaps, Hurley isn’t afraid of shedding an item of clothing or two for the right pic. But this time, it's a throwback snap that has fans turning their heads.

The actor and model, 56, took to Instagram to share an old image of her younger self on her page, pulling a sultry pose, and wearing nothing but her underwear and a small vest.

Hurley’s hair is noticeably shorter in the throwback pic, swapping out her luscious brunette locks for a shorter, sharper bob.

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

The actor is on her knees and can be seen tugging at her white knickers in the photoshoot with fashion photographer Mario Testino.

The look is decidedly '90s, although the model and actor doesn't give a specific date, just adding the #fb (flashback) hashtag.

“Well, hello…. #fb to @britishvogue by @mariotestino,” she wrote under the image, sharing a kissy-face emoji along with the caption.

Fans were quick to respond in the comments section, dropping flame and heart emojis galore. One responded to her caption by writing: “Well, hello to you.”

Read more: Elizabeth Hurley back on the red carpet in a floor-skimming sequin gown

“Just beautiful,” wrote one fan, whilst another added that Hurley looked “gorgeous as ever.”

Others commented on how seemingly ageless Hurley is, with one fan writing: “I can't tell if [the picture] is recent or from 30 years ago.”

Hurley revealed earlier this year that she has a rather novel way of staying fit. 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."

Hurley recently returned to the red carpet after a short hiatus in a stunning shimmering pink gown for a fundraising gala earlier this month.

The 56-year-old mother-of-one stunned in a floor-length pink sequinned gown, which was the perfect choice to attend the glamorous New York City fundraising event for Breast Cancer Research Foundation.

Watch: Elizabeth Hurley shows support for Shane Warne's daughter Brooke after star's tragic death