iHeartRadio Awards 2019: See what all the stars wore!

The iHeartRadio Awards brought out some major star power on Thursday night, but at the end of the day, it was one person who completely stole the show: Taylor Swift.

The singer announced her surprise appearance at the awards show just hours beforehand on Instagram, with fans eager to see if she would be announcing new music during the show. Though there was no news of her upcoming material, she did accept the Tour of the Year award for her record-breaking show, the Reputation Stadium Tour.

Clad in an eye-catching sequined romper, Swift wore her signature blonde locks -- with newly-dyed pink tips -- in a messy pony. She paired the look with Sophia Webster butterfly heels to celebrate the butterfly migration in California.

See photos of Taylor Swift's iHeartRadio Awards look below:

While accepting her award, she eased fans' anticipation by telling them, "I just want to let you know that when there is new music, you will be the first to know."

Of course, there were plenty of other stars in attendance during the music-filled evening: John Legend, Halsey, Bebe Rexha, Maren Morris, Kacey Musgraves, Katy Perry, Garth Brooks and Trisha Yearwood were all at the 2019 iHeartRadio Awards.

See photos from the red carpet below: