Well, that didn't take long.

DuPree Sports clothing in Tulsa already has a T-shirt for sale commemorating Oklahoma State’s retroactive 1945 national championship, which the American Football Coaches Association awarded to the Cowboys on Thursday.

71 years in the making & online now https://t.co/aFyPVu4AGS @OKStateProbs @Jake_Trotter pic.twitter.com/WULyyA0OD6

— DuPree Sports Tulsa (@DuPreeTulsa) October 14, 2016

The AFCA is retroactively giving football national championships to account for the time the organization didn't have the Coaches Poll.

Oklahoma State, then called Oklahoma A&M, was first program to be retroactively awarded a national championship.

Now, it can be celebrated with a T-shirt.