Singer Jessica Simpson made her first TV appearance in 15 years as she performed on American Idol to do a duet with Josh King

The singer and designer debuted the new look, colored by Rita Hazan, during the season 23 finale of 'American Idol'Jessica Simpson debuted a brand-new hairstyle during a special appearance on the season 23 finale of American Idol on May 18The singer turned to her longtime pro Rita Hazan for the fresh dirty blonde hue Hazan tells PEOPLE it took "two hours" to do and looks "more natural"Jessica Simpson is shaking up her look!

Jessica Simpson is embracing a new chapter in her life with a bold transformation. The 43-year-old singer and entrepreneur debuted a fresh dirty blonde hairstyle with sunkissed highlights during the season 23 finale of American Idol on May 18,