Married At First Sight newlyweds Jules Robinson and Cameron Merchant only invited a handful of their co-stars to their wedding on Sunday.

But it seems another MAFS participant may have gatecrashed Jules' bachelorette party, which aired on Channel Nine's A Current Affair on Tuesday.

A hunky shirtless waiter was seen in the background of the Blow Bar Co salon, where the bride-to-be and her pals were getting their hair and makeup done for her party. 

As first reported by Mamamia, some viewers are convinced the waiter looks just like former MAFS star Billy Vincent, who was paired with Susie Bradley on the show.

But the publication noted that on closer inspection it wasn't actually the barista-turned-model. 

It's unclear if the Byron Bay surfer was invited to the wedding. Billy's Instagram also shows he did not make any posts related to the wedding or Cam and Jules.

The only MAFS co-stars invited to the 'wedding of the year' were Cyrell Paule, Nic Jovanovic and Heidi Latcham, who was a bridesmaid at the ceremony. 

It comes after some of Jules and Cam's other former co-stars turned on the reality TV golden couple to expose their 'truth' about them.

Speaking to Daily Mail Australia, Jessika Power, 28, claimed the 37-year-old salon manager's 'bad side' had been edited out of the show to maintain her 'angelic' portrayal and fairytale romance with Cameron, 35. 

Jessika said: 'I think my edit was fair on the show. Yes, a lot of my bad sides were shown, and my good sides weren't, but you did not get to see Jules' bad sides.'

Meanwhile Melissa Lucarelli, 39, revealed Jules had unceremoniously dumped her as a bridesmaid via text, just weeks before her wedding.

After taking to Instagram on Sunday to express her disappointment at being dumped as a bridesmaid, Melissa has been supported by several other co-stars besides Jessika.

'I never get invited to heaps of things, babe, no sweat over here,' wrote Ning Surasiang, seemingly mocking Jules and Cam's 'television exclusive' wedding .

Elizabeth Sobinoff also told Mel to keep her 'head high', before cryptically adding the hashtag: 'When you know, you know'.

Mike Gunner, whose ex-'wife', Heidi Latcham, had attended the wedding as one of Jules' bridesmaids, commented: 'I know how you feel, Mel.'

Other co-stars also slamming the couple include Tamara Joy, Martha Kalifatidis, MAFS season five star Nasser Sultan and more recently Mick Gould.