The post was instantly flooded with likes and supportive comments, including ones from her co-star Aleks Markovic, Love Island's Margarita Smith and MAFS season six groom Dino Hira.
"Jerk move from Insta if they removed it. Gorgeous," one follower penned.
"Absolutely @amanda.m.micallef seen far worse stop killing me," another remarked.
"How do I make this woman my wife!!!! Literally!!!" a third exclaimed, to which Amanda cheekily replied: "Apply within."
This isn't the only dramatic transformation Amanda has debuted in 2020.
The former MAFS bride, who had an unsuccessful marriage to Tash Herz on the series, uploaded a selfie where she sported noticeably lighter locks.
"I’m blonde again after 6 years of no colour," she captioned her snap adding: "One of the best salon experiences I’ve had."
Shortly afterwards, her on-screen ex debuted her own bright red hair dye job with a sultry selfie.
Amanda's season of Married At First Sight has been airing in the US and certain bigoted viewers have targeted Amanda and Tash on social media for being a same-sex married couple.
But despite leaving the show early when the relationship didn't work out, Amanda has not been too cut up from her Married At First Sight experience.
After one fan praised her for the way she navigated her on-screen relationship with Tash, the seemingly-single Amanda shared an insight into her life post-MAFS.
"Been loving life since the show babe don’t stress about me....," she replied to the fan.