Taylor Swift brings Caitlin Clark to cheer on Travis Kelce and the Chiefs... hours before 'big announcement' on GMA

Taylor Swift rounded off a whirlwind week by sneaking into Arrowhead Stadium to watch Travis Kelce and the Kansas City Chiefs on Sunday evening. 

Swift has spent the week on a promotional tour for her new album, The Life of a Showgirl, as she jetted across the world for appearances on a number of talk shows.

However, that didn't stop her making it back to Kansas City in time for the Chiefs' crucial game against the Detroit Lions, as they look to return to winning ways. 

During the first quarter, broadcast cameras cut to show Swift in a suite at Arrowhead, chatting away with WNBA star Caitlin Clark. 

Swift was not spotted entering the stadium on Sunday night, which follows the trend of her sneaky entrances that have occurred a few times this season.

It is believed her secret arrivals were the result of security fears, after she was recently targeted by a stalker who has since received a five-year restraining order.

Meanwhile, Swift's new album has had the world talking and, on Monday, there could be even more to discuss amid reports of a 'big announcement' set to take place.

Good Morning America have teased 'an exclusive Taylor Swift announcement' on Monday morning and fans are beyond eager to find out what it could be. 

Swift's 12th studio album, The Life of a Showgirl, has split opinion among fans, with one track that  references Kelce's manhood coming under particular criticism. 

Strewn throughout the entire song are lyrics about how the Kelce finally broke her unlucky streak in love. She also mentions his 'magic wand' and detailed how 'His love was the key / That opened my thighs.'

Speaking on the Jimmy Fallon show, Swift explained: 'So I brought this into the studio and I was like: I want to do a throwback, timeless-sounding song and I had this idea about "I gotta knock on wood" and it would be all these superstitions. 

'And it really started out in a very innocent place... I don't know what happened, man. 

'I got in there, we started vibing and I don't know how we got here. But I love the song so much.' 

Clark, meanwhile, made her second NFL appearance in one week, having been spotted at an Indianapolis Colts game the weekend prior.

Clark and boyfriend Connor McCaffery were joined on the sidelines by her fellow Indiana Fever stars Natasha Howard and Makayla Timpson.

Clark’s season was cut short by a groin injury, but the Fever still managed to reach the WNBA playoff semifinals, where they fell to the Las Vegas Aces last week.

Later the Fever players got a round of applause as they were shown on the Lucas Oil scoreboard.