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:

14 PHOTOS
Taylor Swift at the iHeartRadio Awards 2019
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Taylor Swift at the iHeartRadio Awards 2019
LOS ANGELES, CALIFORNIA - MARCH 14: Taylor Swift arrives at the 2019 iHeartRadio Music Awards which broadcasted live on FOX at Microsoft Theater on March 14, 2019 in Los Angeles, California. (Photo by Tony Barson/WireImage)
LOS ANGELES, CALIFORNIA - MARCH 14: Taylor Swift arrives at the 2019 iHeartRadio Music Awards which broadcasted live on FOX at Microsoft Theater on March 14, 2019 in Los Angeles, California. (Photo by Tony Barson/WireImage)
LOS ANGELES, CALIFORNIA - MARCH 14: Taylor Swift arrives at the 2019 iHeartRadio Music Awards which broadcasted live on FOX at Microsoft Theater on March 14, 2019 in Los Angeles, California. (Photo by Tony Barson/WireImage)
LOS ANGELES, CALIFORNIA - MARCH 14: Taylor Swift arrives at the 2019 iHeartRadio Music Awards which broadcasted live on FOX at Microsoft Theater on March 14, 2019 in Los Angeles, California. (Photo by Tony Barson/WireImage)
LOS ANGELES, CALIFORNIA - MARCH 14: Taylor Swift arrives at the 2019 iHeartRadio Music Awards which broadcasted live on FOX at Microsoft Theater on March 14, 2019 in Los Angeles, California. (Photo by Tony Barson/WireImage)
LOS ANGELES, CALIFORNIA - MARCH 14: (EDITORIAL USE ONLY. NO COMMERCIAL USE) (L-R) Taylor Swift, Alicia Keys, and Swizz Beatz attend the 2019 iHeartRadio Music Awards which broadcasted live on FOX at Microsoft Theater on March 14, 2019 in Los Angeles, California. (Photo by Kevin Mazur/Getty Images for iHeartMedia)
LOS ANGELES, CALIFORNIA - MARCH 14: Taylor Swift attends 2019 iHeartRadio Music Awards press room during the 2019 iHeartRadio Music Awards which broadcasted live on FOX at Microsoft Theater on March 14, 2019 in Los Angeles, California. (Photo by Presley Ann/FilmMagic)
LOS ANGELES, CALIFORNIA - MARCH 14: (EDITORIAL USE ONLY. NO COMMERCIAL USE) Maren Morris (L) and Taylor Swift on stage at the 2019 iHeartRadio Music Awards which broadcasted live on FOX at the Microsoft Theater on March 14, 2019 in Los Angeles, California. (Photo by Jeff Kravitz/FilmMagic for iHeartMedia )
LOS ANGELES, CALIFORNIA - MARCH 14: (EDITORIAL USE ONLY. NO COMMERCIAL USE) Taylor Swift, shoe detail, attends the 2019 iHeartRadio Music Awards which broadcasted live on FOX at Microsoft Theater on March 14, 2019 in Los Angeles, California. (Photo by Jeff Kravitz/2019 iHeartMedia)
LOS ANGELES, CALIFORNIA - MARCH 14: (EDITORIAL USE ONLY. NO COMMERCIAL USE) Taylor Swift on stage at the 2019 iHeartRadio Music Awards which broadcasted live on FOX at the Microsoft Theater on March 14, 2019 in Los Angeles, California. (Photo by Jeff Kravitz/FilmMagic for iHeartMedia )
LOS ANGELES, CALIFORNIA - MARCH 14: (EDITORIAL USE ONLY. NO COMMERCIAL USE) Taylor Swift attends the 2019 iHeartRadio Music Awards which broadcasted live on FOX at Microsoft Theater on March 14, 2019 in Los Angeles, California. (Photo by Jeff Kravitz/2019 iHeartMedia)
LOS ANGELES, CALIFORNIA - MARCH 14: Taylor Swift arrives at the 2019 iHeartRadio Music Awards which broadcasted live on FOX at Microsoft Theater on March 14, 2019 in Los Angeles, California. (Photo by Axelle/Bauer-Griffin/FilmMagic)
LOS ANGELES, CALIFORNIA - MARCH 14: Taylor Swift arrives at the 2019 iHeartRadio Music Awards which broadcasted live on FOX at Microsoft Theater on March 14, 2019 in Los Angeles, California. (Photo by Axelle/Bauer-Griffin/FilmMagic)
LOS ANGELES, CALIFORNIA - MARCH 14: (EDITORIAL USE ONLY. NO COMMERCIAL USE) Taylor Swift attends the 2019 iHeartRadio Music Awards which broadcasted live on FOX at Microsoft Theater on March 14, 2019 in Los Angeles, California. (Photo by Rich Polk/Getty Images for iHeartMedia)
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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:

39 PHOTOS
iHeartRadio Awards 2019: Red carpet arrivals
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iHeartRadio Awards 2019: Red carpet arrivals
LOS ANGELES, CALIFORNIA - MARCH 14: Kacey Musgraves arrives at the 2019 iHeartRadio Music Awards which broadcasted live on FOX at Microsoft Theater on March 14, 2019 in Los Angeles, California. (Photo by Axelle/Bauer-Griffin/FilmMagic)
LOS ANGELES, CALIFORNIA - MARCH 14: Taylor Swift arrives at the 2019 iHeartRadio Music Awards which broadcasted live on FOX at Microsoft Theater on March 14, 2019 in Los Angeles, California. (Photo by Tony Barson/WireImage)
LOS ANGELES, CALIFORNIA - MARCH 14: John Legend arrives at the 2019 iHeartRadio Music Awards which broadcasted live on FOX at Microsoft Theater on March 14, 2019 in Los Angeles, California. (Photo by Tony Barson/WireImage)
LOS ANGELES, CALIFORNIA - MARCH 14: Zedd and Katy Perry arrives at the 2019 iHeartRadio Music Awards which broadcasted live on FOX at Microsoft Theater on March 14, 2019 in Los Angeles, California. (Photo by Tony Barson/WireImage)
LOS ANGELES, CALIFORNIA - MARCH 14: Maren Morris arrives at the 2019 iHeartRadio Music Awards which broadcasted live on FOX at Microsoft Theater on March 14, 2019 in Los Angeles, California. (Photo by Axelle/Bauer-Griffin/FilmMagic)
LOS ANGELES, CALIFORNIA - MARCH 14: Heidi Klum arrives at the 2019 iHeartRadio Music Awards which broadcasted live on FOX at Microsoft Theater on March 14, 2019 in Los Angeles, California. (Photo by Tony Barson/WireImage)
LOS ANGELES, CALIFORNIA - MARCH 14: Garth Brooks and Trisha Yearwood arrive at the 2019 iHeartRadio Music Awards which broadcasted live on FOX at Microsoft Theater on March 14, 2019 in Los Angeles, California. (Photo by Tony Barson/WireImage)
LOS ANGELES, CALIFORNIA - MARCH 14: Bebe Rexha arrives at the 2019 iHeartRadio Music Awards which broadcasted live on FOX at Microsoft Theater on March 14, 2019 in Los Angeles, California. (Photo by Tony Barson/WireImage)
LOS ANGELES, CALIFORNIA - MARCH 14: Shay Mitchell arrives at the 2019 iHeartRadio Music Awards which broadcasted live on FOX at Microsoft Theater on March 14, 2019 in Los Angeles, California. (Photo by Tony Barson/WireImage)
LOS ANGELES, CALIFORNIA - MARCH 14: Aimee Preston and Steven Tyler arrive at the 2019 iHeartRadio Music Awards which broadcasted live on FOX at Microsoft Theater on March 14, 2019 in Los Angeles, California. (Photo by Axelle/Bauer-Griffin/FilmMagic)
LOS ANGELES, CALIFORNIA - MARCH 14: Elle Fanning arrives at the 2019 iHeartRadio Music Awards which broadcasted live on FOX at Microsoft Theater on March 14, 2019 in Los Angeles, California. (Photo by Tony Barson/WireImage)
Backstreet Boys arrives at the 2019 iHeartRadio Music Awards held at Microsoft Theater at L.A. Live on March 14, 2019 in Los Angeles, California, United States. (Photo by Xavier Collin/Image Press Agency/NurPhoto via Getty Images)
US singer Miguel arrives for the 2019 iHeart Radio Music Awards at the Microsoft theatre on March 14, 2019 in Los Angeles, California. (Photo by Chris Delmas / AFP) (Photo credit should read CHRIS DELMAS/AFP/Getty Images)
Actress Jackie Cruz arrives for the 2019 iHeart Radio Music Awards at the Microsoft theatre on March 14, 2019 in Los Angeles, California. (Photo by Chris Delmas / AFP) (Photo credit should read CHRIS DELMAS/AFP/Getty Images)
LOS ANGELES, CALIFORNIA - MARCH 14: Madison Beer arrives at the 2019 iHeartRadio Music Awards which broadcasted live on FOX at Microsoft Theater on March 14, 2019 in Los Angeles, California. (Photo by Tony Barson/WireImage)
LOS ANGELES, CALIFORNIA - MARCH 14: Drake Bell arrives at the 2019 iHeartRadio Music Awards which broadcasted live on FOX at Microsoft Theater on March 14, 2019 in Los Angeles, California. (Photo by Axelle/Bauer-Griffin/FilmMagic)
LOS ANGELES, CALIFORNIA - MARCH 14: Betty Who arrives at the 2019 iHeartRadio Music Awards which broadcasted live on FOX at Microsoft Theater on March 14, 2019 in Los Angeles, California. (Photo by Tony Barson/WireImage)
LOS ANGELES, CALIFORNIA - MARCH 14: Lele Pons arrives at the 2019 iHeartRadio Music Awards which broadcasted live on FOX at Microsoft Theater on March 14, 2019 in Los Angeles, California. (Photo by Tony Barson/WireImage)
LOS ANGELES, CALIFORNIA - MARCH 14: Ella Mai arrives at the 2019 iHeartRadio Music Awards which broadcasted live on FOX at Microsoft Theater on March 14, 2019 in Los Angeles, California. (Photo by Tony Barson/WireImage)
5 Seconds of Summer arrives at the 2019 iHeartRadio Music Awards held at Microsoft Theater at L.A. Live on March 14, 2019 in Los Angeles, California, United States. (Photo by Xavier Collin/Image Press Agency/NurPhoto via Getty Images)
Stassi Schroeder arrives at the 2019 iHeartRadio Music Awards held at Microsoft Theater at L.A. Live on March 14, 2019 in Los Angeles, California, United States. (Photo by Xavier Collin/Image Press Agency/NurPhoto via Getty Images)
Witney Carson arrives at the 2019 iHeartRadio Music Awards held at Microsoft Theater at L.A. Live on March 14, 2019 in Los Angeles, California, United States. (Photo by Xavier Collin/Image Press Agency/NurPhoto via Getty Images)
Hilary Roberts arrives at the 2019 iHeartRadio Music Awards held at Microsoft Theater at L.A. Live on March 14, 2019 in Los Angeles, California, United States. (Photo by Xavier Collin/Image Press Agency/NurPhoto via Getty Images)
MAX arrives at the 2019 iHeartRadio Music Awards held at Microsoft Theater at L.A. Live on March 14, 2019 in Los Angeles, California, United States. (Photo by Xavier Collin/Image Press Agency/NurPhoto via Getty Images)
Taylor Bisciotti arrives at the 2019 iHeartRadio Music Awards held at Microsoft Theater at L.A. Live on March 14, 2019 in Los Angeles, California, United States. (Photo by Xavier Collin/Image Press Agency/NurPhoto via Getty Images)
LOS ANGELES, CALIFORNIA - MARCH 14: Donna Farizan attends the 2019 iHeartRadio Music Awards which broadcasted live on FOX at Microsoft Theater on March 14, 2019 in Los Angeles, California. (Photo by Jon Kopaloff/FilmMagic)
LOS ANGELES, CALIFORNIA - MARCH 14: Nazanin Kavari attends the 2019 iHeartRadio Music Awards which broadcasted live on FOX at Microsoft Theater on March 14, 2019 in Los Angeles, California. (Photo by Frazer Harrison/Getty Images)
LOS ANGELES, CALIFORNIA - MARCH 14: (L-R) Alabama Barker, Travis Barker, Atiana De La Hoya and Landon Asher Barker arrive at the 2019 iHeartRadio Music Awards which broadcasted live on FOX at Microsoft Theater on March 14, 2019 in Los Angeles, California. (Photo by Axelle/Bauer-Griffin/FilmMagic)
LOS ANGELES, CALIFORNIA - MARCH 14: Nazanin Mandi arrives at the 2019 iHeartRadio Music Awards which broadcasted live on FOX at Microsoft Theater on March 14, 2019 in Los Angeles, California. (Photo by Axelle/Bauer-Griffin/FilmMagic)
LOS ANGELES, CALIFORNIA - MARCH 14: Poppy arrives at the 2019 iHeartRadio Music Awards which broadcasted live on FOX at Microsoft Theater on March 14, 2019 in Los Angeles, California. (Photo by Axelle/Bauer-Griffin/FilmMagic)
LOS ANGELES, CALIFORNIA - MARCH 14: Halsey arrives at the 2019 iHeartRadio Music Awards which broadcasted live on FOX at Microsoft Theater on March 14, 2019 in Los Angeles, California. (Photo by Axelle/Bauer-Griffin/FilmMagic)
LOS ANGELES, CALIFORNIA - MARCH 14: Angela Yee attends the 2019 iHeartRadio Music Awards which broadcasted live on FOX at Microsoft Theater on March 14, 2019 in Los Angeles, California. (Photo by Presley Ann/WireImage)
LOS ANGELES, CALIFORNIA - MARCH 14: Jake T. Austin attends the 2019 iHeartRadio Music Awards which broadcasted live on FOX at Microsoft Theater on March 14, 2019 in Los Angeles, California. (Photo by Presley Ann/WireImage)
LOS ANGELES, CALIFORNIA - MARCH 14: Teala Dunn attends the 2019 iHeartRadio Music Awards which broadcasted live on FOX at Microsoft Theater on March 14, 2019 in Los Angeles, California. (Photo by Jon Kopaloff/FilmMagic)
LOS ANGELES, CALIFORNIA - MARCH 14: (L-R) Michael Caussin and Jana Kramer attend the 2019 iHeartRadio Music Awards which broadcasted live on FOX at Microsoft Theater on March 14, 2019 in Los Angeles, California. (Photo by Jon Kopaloff/FilmMagic)
LOS ANGELES, CALIFORNIA - MARCH 14: Larsen Thompson attends the 2019 iHeartRadio Music Awards which broadcasted live on FOX at Microsoft Theater on March 14, 2019 in Los Angeles, California. (Photo by Presley Ann/WireImage)
LOS ANGELES, CALIFORNIA - MARCH 14: Scheana Marie attends the 2019 iHeartRadio Music Awards which broadcasted live on FOX at Microsoft Theater on March 14, 2019 in Los Angeles, California. (Photo by Presley Ann/WireImage)
LOS ANGELES, CALIFORNIA - MARCH 14: Katie Stevens attends the 2019 iHeartRadio Music Awards which broadcasted live on FOX at Microsoft Theater on March 14, 2019 in Los Angeles, California. (Photo by Presley Ann/WireImage)
LOS ANGELES, CALIFORNIA - MARCH 14: (L-R) Ariana Madix and Tom Sandoval attends the 2019 iHeartRadio Music Awards which broadcasted live on FOX at Microsoft Theater on March 14, 2019 in Los Angeles, California. (Photo by Jon Kopaloff/FilmMagic)
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