04 May 2015, New York City, New York State, USA --- ***MANDATORY BYLINE TO READ INFPhoto.com ONLY*** Anne Hathaway arriving at the 'China: Through The Looking Glass' Costume Institute Benefit Gala at the Metropolitan Museum of Art in New York City. Pictured: Amal Clooney, George Clooney --- Image by © Jennifer Graylock/INFphoto.com/Corbis 04 May 2015, New York City, New York State, USA --- ***MANDATORY BYLINE TO READ INFPhoto.com ONLY*** Anne Hathaway arriving at the 'China: Through The Looking Glass' Costume Institute Benefit Gala at the Metropolitan Museum of Art in New York City. Pictured: Amal Clooney, George Clooney --- Image by © Jennifer Graylock/INFphoto.com/Corbis

Stephen Colbert's first guest on The Late Showwill be none other than George Clooney!

We're guessing this news has Colbert in better spirits than Thursday night, when he bid an emotional farewell to his former boss Jon Stewart on Stewart's last episode of The Daily Show.

Colbert announced the news himself on Twitter Friday, quipping that Clooney - who was one of David Letterman's final Late Show guests in the spring - might not yet be aware that he's scheduled to appear on The Late Show once again next month.

The Late Show with Stephen Colbert premieres Tuesday, Sept. 8 on CBS. Will you watch?

(Full disclosure: TVGuide.com is owned by CBS.)