Travis Kelce’s fiancée Taylor Swift has released the second teaser for her upcoming docuseries, "The End of an Era," which shows behind-the-scenes moments from her record-breaking Eras Tour.In the teaser, released on Thursday, she is seen wearing a Kansas City Chiefs sweater (1:18) to support Kelce’s team.In that particular shot, she was seen going completely makeup free.Swift's signature makeup includes red lips and winged eyeliner.In a second shot (1:28), where she went makeup free, the singer was rehearsing with a guitar.In another no-makeup shot (1:38), Swift was in a recording session.Other highlight shots from the teaser were her kissing Kelce backstage (1:36) and talking with her mom, Andrea Swift while wearing Chiefs jersey (2:07 to 2:26).Taylor Swift first teased content related to Travis Kelce in the October 13 trailer of "The End of an Era."In the new teaser, the singer's mother made warm comments about the Chiefs tight end.“Travis Kelce, he brings a lot of happiness," Andrea said.The docuseries will premiere on December 12.The Eras Tour kicked off on March 17, 2023, and ended in December last year. In total, 149 shows took place on five continents.After Taylor Swift released the trailer, Patrick Mahomes' wife, Brittany Mahomes, supported her by resharing it on her Instagram Story.Taylor Swift showed love for Travis Kelce while performing at "Eras Tour" in ArgentinaDuring her Eras Tour stop at Estadio River Plate in Argentina (Nov. 11, 2023), Taylor Swift altered the lyrics of her song “Karma” from “Karma is the guy on the screen” to a direct nod at her then-boyfriend, Travis Kelce.Kelce, who was in the audience, appeared mind-blown. Swift's father, Scott, who was standing beside him, looked excited over his daughter's gesture.After the show, Swift ran off stage and kissed Kelce.Taylor Swift and Travis Kelce announced their engagement on Instagram on August 26."Your English teacher and your gym teacher are getting married," the caption read.On November 5, Swift and Kelce were spotted in New York City enjoying date night at The Polo Bar. They were photographed leaving hand-in-hand.