AFL's Mad Monday celebrations have kicked off with pictures of players in costume already circulating on social media.
St Kilda skipper Nick Riewoldt appeared on Twitter dressed as superstar NFL quarterback Tim Tebow.
Fellow player Jason Gram is barely recognizable in a tribute to Fantastic Four superhero, The Thing.
Meanwhile, Sam Day tweeted this picture of the Gold Coast Suns looking fantastic in movie-themed attire.
Have you seen any Mad Monday sightings around Melbourne? Send your pictures/video to the news desk