During which season did American Idol feature a guest judge who was the first person to have 1 million Twitter followers?
season nine
Title: American Idol
Passage: Guest judges may occasionally be introduced. In season two, guest judges such as Lionel Richie and Robin Gibb were used, and in season three Donna Summer, Quentin Tarantino and some of the mentors also joined as judges to critique the performances in the final rounds. Guest judges were used in the audition rounds for seasons four, six, nine, and fourteen such as Gene Simmons and LL Cool J in season four, Jewel and Olivia Newton-John in season six, Shania Twain in season eight, Neil Patrick Harris, Avril Lavigne and Katy Perry in season nine, and season eight runner-up, Adam Lambert, in season fourteen.
Title: American Idol (season 16)
Passage: The sixteenth season of American Idol premiered on March 11, 2018, on the ABC television network. It is the show's first season to air on ABC. Ryan Seacrest continued his role as the show's host, while Katy Perry, Luke Bryan, and Lionel Richie joined as judges. Maddie Poppe from Clarksville, Iowa won the season on May 21, 2018, while her boyfriend Caleb Lee Hutchinson was runner - up. Poppe was the first female winner since Candice Glover in season twelve.
Title: List of most-followed Twitter accounts
Passage: This list contains the top 50 accounts with the largest number of followers on the social media platform Twitter. As of April 9, 2018, the most followed person is American singer Katy Perry, with over 108 million followers. Her account was the first to exceed 100 million followers, in June 2017.
List of most-followed Twitter accounts American Idol