As part of month long celebrations, dynamic costumes from over the years are on display at the National Art School Gallery in Darlinghurst.
Oceania is represented by a Cook Islands chief's costume, worn at last year's parade by ex-pat Kiwi-Samoan Pisa Tufuga.
He says the Pasifika Rainbow community plays a big part in Australia's LGBTQI landscape.
"The whole title of the exhibition is called 'Love and Protest'. This is going back to 1978 when there were a lot of protests against the LGBTQI here in Sydney so celebrating the 40th is a milestone."
"Pacific people played a huge part in this whole thing hence why they asked for my costume to represent the Polynesians and the Pacific."
Pisa Tufuga says his Mardi Gras costume was a birthday gift from his aunties, from Auckland's Manurewa.
The Sydney Mardi Gras is on March 4.
Photo supplied to PRN. Caption: Pisa Tufuga in his Mardi Gras costume.