Stonnington Crime Investigation Unit detectives are investigating the theft of expensive suits from a Chadstone shopping centre last month.
Two men were walking through the Dandenong Road shops when they reached the closed clothing store about 10.05pm on Thursday 6 June.
The pair has reached through the locked barriers and grabbed six suits, putting them into bags and leaving the shopping centre.
Investigators have released CCTV footage and images of two men they believe can assist with their enquiries.
The first man is perceived to be Asian in appearance, aged in 30s, with a dark moustache and beard.
He was wearing a red and grey bomber jacket, navy and red track pants, black cap and black and white shoes.
The second man is perceived to be Caucasian in appearance, aged in his 40s, with a grey and dark-coloured beard and moustache.
He was wearing a black Everlast jumper, dark denim jeans, black shoes, a navy coat and black Adidas cap.
Anyone with information or who may recognise the two men are urged to contact Crime Stoppers on 1800 333 000 or submit a confidential report online at www.crimestoppersvic.com.au