Rebel Wilson has a long life to look forward to if her grandparents are any indication. 

The Australian actress, 44, posed alongside her nan and pop on Friday and revealed their impressive ages. 

In photos shared to Instagram Stories, Rebel cosied up to her grandma and grandpa, giving them a sweet cuddle.

She explained in her caption: 'Love my grandparents so much! 97 and 93. Still going strong!' 

The family resemblance was obvious, with Rebel's nan bearing a striking resemblance to the How To Be Single actress. 

Rebel recently spent time at her favourite wellness retreat in Austria to 'reset her health.'

The star looked happy and healthy as she attended an Omega event in Paris after returning from the resort.

The Pitch Perfect star showed off her slimmed down physique in a black and white checked dress as she posed on the red carpet.

Rebel Wilson posed alongside her lookalike grandma, 93, on Friday. Both pictured

Rebel Wilson posed alongside her lookalike grandma, 93, on Friday. Both pictured

She explained in her caption: 'Love my grandparents so much! 97 and 93. Still going strong!' Pictured with her grandad, who is 97

She explained in her caption: 'Love my grandparents so much! 97 and 93. Still going strong!' Pictured with her grandad, who is 97

Her arrival in Paris comes after she recently spent time at the Mayrlife Altaussee resort with her partner Ramona Agruma and daughter Royce.

Rebel enjoyed long walks, anti-inflammatory meals and cryotherapy treatments during her stay.

'Family time in Altausee Austria, doing my favourite summer ritual, going to Mayrlife Altaussee and resetting my health! Love this place so much,' she wrote on Instagram.

The clinic, which is lead by Medical Director Dr. Sepp Fegerl, is renowned for its strict - but incredibly effective - 'cure' that purges the body of toxins and promises to leave you toned, vibrant and full of energy in days.

Rebel's 36kg weight loss was previously attributed to the strategies developed by Austrian physician Dr Franz Xaver Mayr.

Rebel recently spent time at the Mayrlife Altaussee resort with her partner Ramona Agruma and daughter Royce

Rebel recently spent time at the Mayrlife Altaussee resort with her partner Ramona Agruma and daughter Royce 

She later showed off her slimmed down frame at an Omega event after returning from the 5-star Austrian health retreat

She later showed off her slimmed down frame at an Omega event after returning from the 5-star Austrian health retreat

However, she distanced herself from the Mayr Method in 2022, telling her 11 million Instagram followers: 'This was never my diet.'

The Mayr Method eliminates certain foods, reduces sugar and also encourages certain eating practices such as chewing food thoroughly.

The premise behind the clinic is a health regime based on intestinal cleansing that combines medical detox, personalised diets and holistic healing treatments to deliver a total health transformation in as little as seven days.

Detoxification is the core element of every program, with an emphasis on rest, strict cleansing of the digestive system and re-education of eating habits.

The philosophy of Vivamayr is that health and the immune system originates in the gut. The process is based on completely clearing the gut, combined with detoxifying treatments, daily Epsom salts and holistic therapies for the ultimate detox.

Every guest sees their doctor every single day for a check-up where their diet and medication is altered depending on progress and symptoms.

Treatments aren't included in the price and guests can expect to fork out around $3800 per week on top of the $8000 per week accommodation to indulge in a tailor-made program.

Vivamayr advises that in order to be 'cured', a three-week stay is required and they advise a minimum of 10 nights with some guests moving to the clinic for as long as three months.