The legendary Lee Corso has been a cornerstone of ESPN’s “College GameDay” since it began as an in-studio show in 1987, remaining a central figure ever since. On Thursday, Corso celebrated his 90th birthday,

For Lee Corso's 90th birthday we looked back on some of his most memorable headgear selections on "College GameDay," a tradition that began in 1996.

Although we don't want to admit it, Lee Corso is just three weeks away from his final episode of "College GameDay." Corso has been the heart and soul of "College GameDay" since its inception in 1987.

ESPN celebrates the 90th birthday of legendary College GameDay host Lee Corso with an iconic headgear moment on the show.

Before Lee Corso makes his final headgear pick on College GameDay Aug. 30, ESPN will air a one-hour tribute special to the venerable analyst and former coach. “Not So Fast My Friend: A Lee Corso Special” will debut at 8 p.m. Central on Aug. 22 on ESPN. The special will re-air at midnight and 7 a.m. the following morning on ESPN2.

Lee Corso was honored at the ESPYS as he prepares for his final season on ESPN’s “College GameDay.” ESPN’s president of content Burke Magnus had said the tribute Wednesday night would mark the start of Corso’s farewell,

Everyone on the College GameDay crew sent Lee Corso a birthday message on Thursday to celebrate his 90th birthday.

Lee Corso is a college football legend, and his legacy on ESPN's "College GameDay" is rich and hard to top. Corso has been one of the premier college football analysts in the nation for nearly 40 years.