Twin sisters whose relationship helped launched their acting careers have taken their close ties to the next level after one tried the other’s breast milk as an illness remedy.

Tamera Mowry-Housley and Tia Mowry-Hardrict – who shot to fame in the 90s sitcom Sister, Sister – shared news of the unusual transaction on social media.

It came after the former, who has two children with husband Adam Housley, became sick and struggled to find an effective medicine to help combat her symptoms.

Her sister – apparently fresh from reading an article about how breast milk can be beneficial for adults – offered up some of her own and it quickly earned a rave review.

“Oh my gosh, Tia, this is amazing,” said her sister in a short clip on Instagram.

“Your breast milk is the best milk I’ve ever tried in my life, oh my god.”

The video, which showed Tamera holding a coffee mug full of the milk and hidden behind a filter, was accompanied by the caption: “Well, I do feel better.”

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The twin sisters starred together in 90s comedy Sister, Sister
The siblings starred together in 90s comedy Sister, Sister

Her sister also shared the post and revealed that it was not the first time Tamera had sampled her breast milk.

She wrote: “Soooo, my sister is desperate for some healing. She’s sicky poo and I sent her an article on how breast milk has healing properties and was okay with drinking my #breastmilk.

“Ps, she’s had some before and I mean, she’s my twin.”

Tia, who has two children with actor Cory Hardrict, did not share the article she read that claimed drinking breast milk could have benefits for adults.

The sisters' close relationship helped launch their careers
The sisters’ close relationship helped launch their careers

Fans of the sisters, aged 40, appear divided on whether it is a suitable beverage to be shared between siblings.

One commented on the video – which has more than 360,000 views – to vouch for breast milk as being “liquid gold”, but another said the idea of drinking it beyond childhood was “nasty”.

While its benefits to infants are well known, there is little evidence to suggest it serves any genuine advantages for adults who drink it.

Experts have said there is no scientific proof that it offers anything more than a placebo effect.