Stacey Hampton has threatened fellow Married At First Sight star Jessika Power with a cease a desist letter over an Instagram video.

Stacey, 26, claims that she was forced to seek medical attention after Jessika disparaged her in a paid MAFS recap video for New Idea and Who magazine.

In the recap, which Jessika posted on her Instagram Stories, she said that Stacey was 'pathological' in her denial that she had secretly slept with Mikey Pembroke on the show.

Brides at war! Stacey Hampton (right) has threatened fellow Married At First Sight star Jessika Power (left) with a cease a desist letter over an Instagram video

She also branded Stacey's on-screen husband Michael Goonan a 'piece of work', among other things.

After the video went live on Friday night, a furious Stacey privately messaged Jessika on Instagram and threatened her with legal action over the recap.

'You're still calling me names and getting your 10 cents in,' Stacey wrote.

'How f***ing embarrassing. You're so last season, stop it.'

Drama: In a paid recap video for Who and New Idea, Jessika said that Stacey was 'pathological' in her denial that she had secretly slept with Mikey Pembroke on the show

She continued: 'I'm organising my lawyer to send you a cease and desist letter. I request no further comments from you here on in.'

Never one to hold back, Jess fired back: 'Oh Stacey, get over it babe.

'If I had a lawyer send a cease and desist letter to everyone who said things about me I would have been on the phone to them every day.'

She continued: 'I've been asked (and paid) to do the recaps for Who magazine and New Idea. If you don't like what I said then don't act so shady.'

'How f***ing embarrassing!' After the video went live on Friday night, a furious Stacey privately messaged Jessika on Instagram and threatened her with legal action over the recap

When contacted for comment by Daily Mail Australia on Saturday, Stacey said that Jessika's remarks about her and Michael had harmed her mental health and forced her to seek medical attention.

'In order to stop Jessika defaming my character on a social platform, I've met with lawyers to have a letter sent which will enable me to be free of slander,' she said.

'Jessika will no longer be able to put me down and cause my mental health to become worse.

'I sought medical attention after reading her comments on her [Instagram] Story and they wrote me a letter outlining her impact on [my] mental health.'

She added: 'Her whole [Instagram] Story was an insult to me and my ex [Michael].'

'If you don't like what I said then don't act so shady': Jessika argued back that she was just doing paid recaps for a magazine and that Stacey needed to 'get over it'

Earlier this week, Stacey told Daily Mail Australia that she went to hospital and was on antidepressants due to the online trolling she's received since her alleged affair with Mikey was exposed at the Married At First Sight reunion dinner party.

Jessika has been the official Married At First Sight recapper for Who and New Idea magazine this season, and shares weekly recap videos to her Instagram page as part of the collaboration.

She's not the only former MAFS star to throw shade at Stacey, with Martha Kalifatidis and Michael Brunelli criticising Stacey in a recap video for the official Married At First Sight YouTube channel.

'I sought medical attention after reading her comments': Stacey claims that she was forced to seek medical attention after seeing Jessika's Instagram video

The pair made fun of the aspiring lawyer while recapping the reunion dinner party this week.

In the episode, Stacey was accused of sleeping with Mikey - an allegation that she vehemently denied throughout the dinner party.

'It's rumours, bro!' she snapped after being accused of bedding Mikey.

As they watched the scene back, both Martha and Michael mocked Stacey for using the word 'bro'.

Shade! Jessika's not the only former MAFS star to throw shade at Stacey, with Martha Kalifatidis (right) and Michael Brunelli (left) criticising Stacey in a recap video for the official Married At First Sight YouTube channel

'How will she ever get a job?' Martha sniped, before Michael chimed in with a cheeky impression of Stacey.

'Your Honor, bro, you gotta listen!' he said, clearly mocking the blonde lawyer.

As the recap continued, both Martha and Michael continued to make fun of Stacey for repeatedly denying that she'd hooked up with Mikey.

'I'm offended now, how does dumb she think we are?' an exasperated Martha said.

'Your Honor, bro, you gotta listen!' As they watched an episode of MAFS, both Martha and Michael mocked Stacey for using the word 'bro'

The social media superstar took one final swipe at Stacey at the end of the recap, saying: 'What lawyers get paid, their yearly rate, after this show, is actually gonna go down now because of Stacey.'

During Tuesday's explosive reunion episode of MAFS, the cheating scandal between Mikey and Stacey played out.

Stacey's one-night stand with Mikey was exposed at the dinner party.

Shocking: During Tuesday's explosive reunion episode of MAFS, the cheating scandal between Mikey Pembroke (pictured) and Stacey played out

The law graduate repeatedly denied the allegations, even after Mikey produced corroborative text messages that proved they'd spent the night together.

Aleks Markovic and Ivan Sarakula also claimed Mikey's clothes had been dropped off at their apartment in a Mecca Cosmetics bag after the alleged incident.

The reunion was filmed in mid-January and, more than two months later, Stacey continues to deny she ever slept with Mikey.

Married At First Sight concludes Sunday at 7pm on Channel Nine