It’s the biggest sporting event of the Australian calendar, bringing out a fierce rivalry between fans in New South Wales and Queensland.
And even the celebrities got caught up in the State Of Origin frenzy on Wednesday, as they declared their allegiances by showing off their colours.
From Footy Show host Beau Ryan dressing up with his baby son Jesse to Karl Stefanovic lunging at the TV screen, the stars couldn’t contain their excitement.
Triumph! Karl Stefanvic couldn’t contain his excitement as he watched the State Of Origins game on Wednesday night
Jasmine Yarbrough shared an exasperated snap of Karl wearing a Queensland T-shirt and punching the air in triumph in front of TV.
‘Can anyone explain what I’ve got myself into with this one,’ she deadpanned in the caption.
Elsewhere, Beau Ryan donned his NSW Blues uniform, while his eight-month-old son Jesse was dressed up in a Queensland Maroons T-shirt by his wife Kara.
Sharing a father-son selfie on Instagram, Beau wrote in the caption: ‘So I just got home and realised @kararyan_ got to him first. #StartEmYoung.’
Sweet: Beau Ryan donned his NSW Blues uniform, while his eight-month-old son Jesse was dressed up in maroon by his wife Kara for the State of Origin opening game
Like father, like daughter! Beau also posed with his five-year-old daughter Remi who showed her support for the blues
‘The Ryan household’: He also posted a family shot of the Ryan clan donning their colours
He also posted a family shot with Kara and their five-year-old daughter Remi, writing alongside it: ‘The Ryan household.
‘Good to see @kararyan_ has brainwashed the little man. He looks like he is loving being a Queenslander.’
Elsewhere, MAFS’ Telv Williams celebrated with his girlfriend Maddie Carolan at a sporting luncheon, where he was joined by his former co-star Patrick Miller.
Cute couple! Married At First Sight’s Telv Williams celebrated the opening game with his girlfriend Maddie Carolan
‘ C’mon the blues!’ Kris Smith showed his appreciation for the NSW Blues in a cute snap with his bulldog
Here he is! Telv was joined by his former co-star Patrick Miller at the sporting luncheon
MAFS lovebirds Carly Bowyer and Troy Delmege also got in on the action, dressing up in opposing colours as they mimed throttling each other.
Troy joked: ‘Queensland always play dirty! (Carly too) So lucky that Origin is coming to Melbs! I’ll be there screaming on the blues.’
Looking to put a stop to the Maroons’ 13 year reign of dominance, NSW have chosen a new look team, where 11 players will don the sky blue jersey for the first time.
Loving life! Schapelle Corby declared her allegiance for the Maroons on the night
Boyd Cordner will lead the Blues out in his second series as captain.
The Maroons also have a relatively new look side with no Cooper Cronk, Johnathan Thurston, Billy Slater or Cameron Smith.
NSW-born Greg Inglis will captain the Maroons for the first time.
The Blues will go into the series opener as favourites priced at $1.42 while Queensland are out to $3, according to Sportsbet.
‘Origin 1 let’s go!’ Former AFL star Brendan Fevola also proudly dressed up in his Queensland T-shirt
All is fair in love and war: MAFS lovebirds Carly Bowyer and Troy Delmege also got in on the action, dressing up in opposing colours as they mimed throttling each other