It's a Knockout (1985–87) was a hugely popular show on Australian television in the 1980s. 

After a drunken night at a pub in Broken Hill, the three drag artists – Mitzi (Hugo Weaving), Felicia (Guy Pearce) and Bernadette (Terence Stamp) – awake to find their bus defaced with a homophobic

'The Wattle Dress' is a costume worn by Guy Pearce (AKA Adam Whitely / Felicia JollyGoodFellow) in The Adventures of Priscilla, Queen of the Desert. 

The Wattle Dress is only on screen in The Adventures of Priscilla, Queen of the Desert for a few seconds, but it iconically represents Australian flora.

Autographed publicity portrait of Guy Pearce