Jessica Simpson makes a surprise return to singing live on TV, performing on the 'American Idol' finale as Jamal Roberts is crowned the winner of season 23.

The singer delivered her first TV performance in 15 years during the season finale of “American Idol” on May 18. She sang her new track “Blame Me,” before teaming with one of this season’s “Idol” contestants, Josh King, on “These Boots Are Made for Walkin’,” which she recorded in 2005. That song, of course, is a cover of Nancy Sinatra’s 1966 hit.

Jessica Simpson hit the "American Idol" stage on Sunday night's season finale, where she made her first TV performance in 15 years. The Grammy-nominated singer took the mic wearing a shimmering gold dress and turquoise jewelry.