DONNA Anderson and Gary Collyer had always dreamed of getting married, but it was a cancer diagnosis late last year that forced them to kick their plans for a Great Gatsby-inspired wedding up a gear.
Ms Anderson, from Casula, was diagnosed with grade four cancer in her lungs, back and liver in December and is presently undergoing a third round of chemotherapy.
"It's a six-month program and we're just taking it one day at a time," Ms Anderson, 51, said.
She said the treatment causes her to feel generally unwell but she hopes to build up her strength ahead of the wedding on Saturday.
"Luckily I haven't started losing my hair. When I first started the chemo I said to Gary: 'take me to hairdresser', it was a weird thing to do, but I just wanted to get all of my hair chopped off.
"I have long brown hair halfway down my back and I just thought it would be more devastating to find that on my pillow than short, light-coloured hair."
Ms Anderson said the couple first got engaged two years after they met, but did not get married because "life got in the way".
"We always wanted to marry each other and when I was diagnosed, Gary proposed again straight away.
"He doesn't believe that anything will happen to me and thinks I'll go into remission, but I wanted to have the wedding as soon as possible.
"I love The Great Gatsby and he's planned everything perfectly to theme and even though its a bit unconventional he ordered my wedding dress for me and he's tracked down a 1920s wedding veil from Wisconsin."
Their son, Brandon, 20, a university student, will be their ring bearer.
Masters Home Improvements at Gregory Hills will donate and build the couple a gazebo which will serve as the dance floor at the wedding.