Police are appealing for public assistance to help locate missing woman Logan Whatman and her 6-month-old daughter Karma, Victoria Police say.
The 20-year-old and her baby were last seen on Monday in Dandenong.
Police have concerns for their welfare due to the age of the child and length of time since anyone has heard from them.
Logan is described as 160cm tall, long blonde wavy hair, thin build and blue eyes.
She was last seen wearing a black t-shirt and black skinny jeans.
Police have released an image of Logan in the hope someone may know her current whereabouts.
Anyone with information on the whereabouts of Logan and Karma are urged to contact Dandenong Police Station on 9767 7444.