Zendaya began her professional career working as a fashion model for Macy's, Mervyns and Old Navy. She was featured in an iCarly toys ad. She also appeared as a back-up dancer in a Sears commercial, featuring Disney's Actress Selena Gomez. In 2009, she was a featured performer in the Kidz Bop music video for its cover of the song "Hot n Cold", which was released on Kidz Bop 15. She auditioned in November 2009 for the role of CeCe Jones to join the cast of Dance Dance Chicago, later changed to Shake It Up!, but was selected as Rocky Blue instead. For her audition, she performed Michael Jackson's "Leave Me Alone". Shake It Up premiered on November 7, 2010, and it was watched by 6. 2 million viewers, becoming Disney Channel's second highest-rated premiere in Disney Channel’s 27-year history. In 2011 Zendaya released "Swag It Out", a promotional independent single. The song was composed by Bobby Brackins and produced by Glenn A. Foster. She also starred in the book trailer for "From Bad To Cursed" by Katie Alender. In the same year, she released "Watch Me," featuring Bella Thorne, on June 21. The song peaked at 86 on the Billboard Hot 100. The second season of Shake It Up was announced on March 16, 2011, and premiered on September 18, 2011. On June 5, 2011, Shake It Up had a crossover episode with Good Luck Charlie. Zendaya hosted Make Your Mark: Ultimate Dance Off 2011.