Cassie Sainsbury is set to marry fiancé Scott Broadbridge in a "lavish" and traditional ceremony in Colombia's El Buen Pastor Prison.
The 22-year-old, who was sentenced to six years after she was discovered with 5.9kgs of cocaine packed into her suitcase as she tried to fly home to Australia from El Dorado International Airport, was recently granted permission to hold her nuptials inside the notorious prison.
The wedding is expected to take place mid-next year.
Speaking with The Advertiser on Friday, the couple's celebrity agent Max Markson said he expects a number of top Aussie designers to vie for the opportunity to create her wedding gown.
"It's going to be a special event and will attract attention across the country ... that's great exposure," Markson said.
He added that the big day will see family, prison wardens and fellow inmates join in the festivities.
Markson also believes a behind bars wedding exclusive will be secured soon after Christmas.
Broadbridge has twice visited Sainsbury in the Colombian jailhouse since her incarceration. He has long maintained that he would stick by her "no matter how long it takes."
"Cass and I are engaged to be married and I intend to marry her," he said during a press conference back in May.
"Cass is a delight of my life, I know that she is not involved in the drug trade and know that she was not deliberately taking drugs or carrying drugs anywhere."
He added: "It is extremely stressful for her but we are able to talk everyday and that is a great comfort to both of us."
WATCH: Sainsbury hints at bullying inside the notorious prison. Post continues...
Sainsbury was sentenced to six years in prison under a plea deal approved by a Colombian judge. She will also have to pay a fine of almost $90,000.
The Adelaide woman was initially looking at 20-30 years in prison, but could now serve as little as three years if she gets time for good behaviour.
Sainsbury agreed to reveal the identities of others in the drug ring to receive a lighter sentence.
According to news.com.au, the judge described her as a "victim" and a "small fish" who had been duped by a large criminal syndicate into smuggling the drugs.
Sainsbury's sister, Khala Sainsbury, recently told News Corp that she now fears reprisal attacks.
"She [Cassie] got told to be quiet otherwise they'd come after her family," she said.
"My ultimate fear is bringing her home in a body bag."
"I'm worried about my little sister. I never thought anything like this would happen in a million years."
"I love her. I'll always love her - she's my sister."
WATCH: Cassie shares her side of the story on 60 Minutes. Post continues…
Sainsbury also said the ordeal may have permanently sullied her sister's reputation.
"It's going to be hard for her to do anything," she told Seven News.
The US Drug Enforcement Agency (DEA) contacted Colombian authorities after her plane ticket home to Australia via London was purchased last minute by an "unknown party" in Hong Kong.