Married At First Sight's Jessika Power is one of Australia's wildest reality stars. 

And the 27-year-old certainly did not disappoint on Saturday afternoon in Bali, after joining forces with co-star Tamara Joy at a pool party in Seminyak. 

The blonde beauty straddled her co-star, 30, while wearing a skimpy bikini, after famously stealing her husband on the TV show earlier this year. 

Taking to Instagram, Jessika shared a series of pictures mounting the brunette on a sun lounger, while flaunting her recently enhanced breasts in a black bikini. 

She then excitably waved an arm around in the air, pretending to ride Tamara like a horse, much to the amusement of other revelers. 

Later on, Jessika shared a raunchy video clip of the pair diving onto a floating bean bag in G-string bikini bottoms, as a group of men already in the pool cheered. 

'Crazy how after a year full of bulls*** media and poor choice in men can bring a sisterhood together,' joked Jessika. 

Tamara added: 'It's been a long road with loads of bulls*** and two failed marriages.

'But if we had of been able to hang out on MAFS, we prob would have left our husbands for each other Hahahaha.'

On Married At First Sight, Jessika famously had an 'affair' with Tamara's 'husband' Dan Webb, after the couple entered the show as intruders six week into the social experiment.

Viewers across Australia were outraged as Jessika strung 'husband' Mick Gould along so she could grow closer to Dan behind his back. 

Once the scandal was exposed, Jessika and Tamara's friendship fell apart, until they recently reconciled and put their differences aside.