Married At First Sight star Ivan Sarakula recently debuted his much more laid-back look. 

And on Christmas Day, the former Married At First Sight star took it up a notch as he posed alongside former co-star Tamara Joy. 

The 31-year-old real estate agent showed off his slim physique in a revealing Santa costume. 

It consisted of a pair of underwear with the face of Father Christmas placed in rather racy position, and a pair of red straps that ran up his chest. 

Ivan, who also showed off her new, long hair in the image, held Santa's hat up against his torso in a suggestive manner as he beamed for the camera. 

Tamara, 29, meanwhile looked adorable in a Mrs Claus outfit that flaunted her impressive physique. 

He captioned the photo simply 'Merry Christmas' then joked on Instagram Stories that the pair had picked matching outfits by accident.  

On Tuesday, Ivan showed off his new 'mullet' hairdo while on a road trip with friends.

In an Instagram Stories post shared by Tamara, Ivan had his long dark hair worn in a half-up style.

The visual result of his progressive choice was to give the appearance of a mullet. 

In recent months, Ivan has drastically changed his appearance by growing out his hair and hitting the gym to add some muscle to his once-slender frame.

He's also changed his fashion sense, swapping his usual dress shirts and trousers for tank tops and ripped jeans.

Previously, he sported a short, slicked-back hairdo and adopted a conservative style.

Ivan debuted his new look at a Boohoo event in Sydney in November.

Ivan was partnered with fellow real estate agent Aleks Markovic on Married At First Sight earlier this year, but they are no longer together.