THE opening outfit of a David Jones fashion show is usually a glitzy show-stopper.

But in a sign the department store is determined to be fashion-forward, it will send Miranda Kerr down the runway in a restrained navy wool tuxedo - a key seasonal trend.

The Sun-Herald can exclusively reveal that Kerr will open the show in a Josh Goot design for the store's autumn/winter fashion launch at its Elizabeth Street store on Wednesday. It is a first for Goot, who follows show-opening designers such as Carla Zampatti, Lisa Ho and Camilla and Marc.

The tuxedo that Kerr will wear is a new direction for the designer, known for his bold prints.

''Suiting and shirting is a new category for the label,'' Goot said. ''We wanted to do clothes that spoke to an urban, professional woman, so we thought that tailoring was really important in the domestic landscape as there wasn't really anyone offering amazing quality wool suiting [in Australia].''

Kerr, 28, explained that colourful prints are still on trend. ''I feel like that there are not many rules this winter when it comes to colour as there is a big range of beautiful brights,'' she said.

''Trends that I'm really loving are colourful prints, lace and the tuxedo jacket.''

The department store will stream the fashion launch live on its Facebook page.