Wear a white shirt with a touch of silver to support the Ovarian Cancer Research Foundation on OCRF White Shirt Day.
Michael Klim, Pania Rose and Justin North are just a few of the high profile people supporting the initiative.
There will be all kinds of events on in Melbourne at Witchery stores, where you might find yourself face-to-face with one of the many supporting celebrities.
OCRF White Shirt Day is on 19 May.