Britney Spears and Iggy Azalea gave a live performance of their new single “Pretty Girls” at the MGM Grand Garden Arena in Las Vegas on Sunday night's Billboard Music Awards. Azalea, who also directed the song's video, debuted a new hairstyle at the awards ceremony.

For her “Pretty Girls” performance, Spears wore a transparent dominatrix-style outfit in black latex in while Azalea settled for a silver mini skirt-top dress. The 33-year-old “Womanizer” singer completed her look with thigh-high black boots and a sheer catsuit.

Azalea joins a list of celebrities including Kaley Cuoco-Sweeting, Hilary Duff, Julianne Hough, and Madonna by coloring her hair pink. The 24-year-old rapper told Giuliana Rancic of E! Online on the red carpet that her new look reflects an “image overhaul,” which she needed because of her new album. The rapper said she now feels “very revamped” after the cut and the dash of color.

After the awards performance, Spears took to social media to thank her fans. She said she needed to thank “so many people” for making “#PrettyGirlsonBBMAs happen tonight!” “Of course my girl @IggyAzalea for KILLING it on stage with me, @BazHalpin for directing, @Billboard, my very talented dancers & band…,” wrote Spears on Instagram. She also thanked her crew and called them “hardest working people around.”

Azalea’s song “Fancy” with Charlie XCX won the award for Top Rap Song. Meanwhile, singer Taylor Swift bagged the maximum number of awards in various categories. The singer, who was accompanied to the award ceremony by her rumored beau DJ Calvin Harris, took home eight awards. She also debuted her music video for the song “Bad Blood” at the ceremony. Meanwhile, check out the music video of “Pretty Girls” below.

Source: Music Awards 2015

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