Sydney's Gay and Lesbian Mardi Gras parade is returning to Oxford Street after two years away, and is marking the 45th anniversary of the iconic event in some style.Sydney's Gay and Lesbian Mardi Gras parade is returning to Oxford Street after two years.Over 200 floats will be part of the famous, iconic festival, and 12,500 marchers are expected to participate.The city's suburbs have embraced the Mardi Gras spirit as Sydney becomes the first southern hemisphere city to host WorldPride.On the upper north shore, Hornsby Station has its stars painted in rainbow colours.Murals have been painted across Sydney, including this one on Oxford Street, which portrays two Indigenous men.Forty-five WorldPride installations have been scattered around the city in the lead-up to the parade.One of the more notable ones is "Progress Shark", a sculpture of a great white wrapped in a rainbow leotard at the Australian Museum.A number of brands and their representatives are getting involved in the parade on Saturday night.Sydney Airport is one of those brands joining in on the WorldPride spirit, launching rainbow-coloured sign as well as similarly themed baggage claim carousels.The Domain was empty after hosting Friday night's Welcome Concert, but it won't be empty for long.More international superstars are due to hit the stage, with American RnB singer Kelly Rowland set to perform on Sunday for the official WorldPride Party. .