Hundreds of ravers turn to the dark side in eye-catching outfits to celebrate Star Wars Day at Midnight Mafia VIII: Gangs of the Galaxies'

Hundreds of diehard science fiction fans donned eye-catching outfits at a music festival to celebrate Star Wars Day. 

'Midnight Mafia VIII: Gangs of the Galaxies' saw revellers descend on Sydney Olympic Park, in western Sydney, on Saturday night.

May 4 is the official date the sciene fiction franchise is celebrated around the world with fans often greeting each other with the phrase: 'May the Fourth be with you'.

The comment is a play on the phrase commonly spoken in the movies where the characters would say: 'May the force be with you'. 

A number of revellers dressed as the series' most memorable heroes such as Princess Leia, Obi Wan Kenobi and Luke Skywalker.

The series' villains were represented as well, as others dressed as characters such as Darth Vader and Darth Maul.

Some partygoers spun their costumes to be as revealing as possible, braving the chilly 17C temperatures and wet and windy conditions.

The event promised attendees would 'enter the insane world of the gangs that reside in all known galaxies'.

'There's zero respect but plenty of places to hide,' the cryptic event details reads. 

'Its Turf War like no other and not all Gangs are run by Humans. The Rebellion is on so reach for the stars!'

The event promised the 'best line up ever with over 10 of the hottest acts on the scene right not' alongside a wild production including lasers and massive screens for visuals.

Tickets for the event cost as much as $180 when it went on sale on February 2, with fans urged to pre-register as Midnight Mafia is their 'fastest selling party' over the past two years.

Prior events run by Harder Styles United (HSU) have garnered a large police presence and Saturday was no different.

However, NSW Police confirmed there were no arrests or infringement notices handed out as the crowd remained well-behaved.

HSU's success over the past two years has been contrasted with music festivals considered cornerstones of the Australian music industry collapsing and struggling to keep afloat.

The largest of which, Splendour In The Grass, was sensationally cancelled for 2024 just days after releasing an 'underwhelming' lineup.

Music promoter, Danny Grant, said music festivals have 'had a nightmare three years and were trying to diversify too much'.

'(Splendour) went from Kylie Minogue to [American rapper] Future and they were probably aiming at crowds that didn't want to see each other.'

He added: 'I don't think there was much of a crossover. It did the opposite of what they were hoping for.'