George Clooney, Stephen Colbert's first guest on "The Late Show With Stephen Colbert," won't be alone when the show debuts on Sept. 8. Republican presidential hopeful Jeb Bush will also make an appearance on the CBS talk show's highly anticipated premiere. 

The former governor of Florida and presidential son and brother will also be joining Kendrick Lamar, who Colbert announced at the Television Critics Association press tour on Monday would be his first musical guest. Lamar was also Colbert’s last musical guest on “The Colbert Report,” which ended its nine-year run last December.

Being one of the first guests on “The Late Show” is a smart move on Bush’s part because Colbert’s new show is expected to have a lot of eyes on it in its first week. Younger viewers, in particular, are likely to be tuning in the morning after for whatever viral-video shenanigans transpire. This won’t be the first time Bush has visited a late-night comedy show. In June, he stopped by NBC's 30 Rock to slow-jam the news with Jimmy Fallon on “The Tonight Show."

The interview with Bush will a be a good way of seeing how Stephen Colbert, out of his Comedy Central character, will approach politics during his “Late Show” tenure. He has spent most of this summer slowly introducing audiences to the “real” Colbert through a relatively aggressive digital strategy involving several viral videos.