Police are appealing for public assistance to help locate missing teenager Mikayla Van Boekel.
The 13-year-old was last seen at an Ivanhoe address about 7.30pm on 27 November.
Police hold concerns for Mikayla due to her age and the length of time she has been missing.
Mikayla is described as 165cm tall with a medium build, light brown hair, brown eyes and has a nose piercing.
She was last seen wearing a black jumper and black leggings with black runners and was carrying a black handbag.
She is known to frequent the South Yarra and Altona areas.
Police have released an image of Mikayla in the hope someone recognises her and can provide information regarding her current whereabouts.
Anyone with information about Mikayla is asked to contact Heidelberg Police Station on 9450 8000.