Police are appealing for public assistance to help locate missing woman Melissa.
The 30-year-old was last seen in Donvale about 3pm on 31 December.
She said she was attending a New Year's Eve party however she has not been seen since.
Melissa is described as 155cm tall, with a medium build, blue eyes and blonde hair with pink highlights.
She was last seen wearing an Adidas t-shirt with a blue logo on the chest, a black jacket, black pants and white runners.
Police and family hold concerns for her welfare due to the length of time she has been missing and an ongoing medical condition.
Melissa is known to frequent the Ringwood and Doncaster areas.
Investigators have released an image of Melissa in the hope someone may have seen her and can provide information regarding her whereabouts.
Anyone who sights Melissa is urged to contact Doncaster Police Station on 8841 3999.
