Conor McGregor just made his fight with Floyd Mayweather Twitter official.

THE FIGHT IS ON. pic.twitter.com/KhW0u3jRft

— Conor McGregor (@TheNotoriousMMA) June 14, 2017

It is believed the two men will fight using boxing rules on August 26th, either at the MGM Grand Garden or the T-Mobile Arena in Las Vegas.

Mayweather, who is 49-0, will come out of retirement to fight McGregor, who was 21-3 in the Octagon.

Mayweather is a huge favorite at 1/16 to win.