Taylor Swift will appear on The Late Show with Stephen Colbert to promote her 12th album, The Life of a Showgirl. 
Stephen Colbert announced Swift's appearance with a video featuring him dancing to her track, "Opalite," and Swift making a cameo in a cozy cardigan.
Swift's appearance comes as The Eras Tour docuseries on Disney+ is set to air on December 12th and will feature behind-the-scenes footage, sound bites from Swift's mother, and cameos from stars like Ed Sheeran and Florence Welch.
The docuseries will provide insight into how Swift engineered her three-hour concerts.
Episodes of The Late Show with Stephen Colbert air at 11:35 p.m. ET on CBS and stream on Paramount+ the next day.
Source: https://www.geo.tv/latest/638275-taylor-swift-set-to-appear-on-stephen-colbert-show-before-docuseries-premiere