he third season of 90210, an American television series, premiered on Monday September 13, 2010. The CW officially renewed the show for a third season on February 16, 2010. With the reveal of the networks fall 2010 schedule, they announced their decision to move 90210 to Monday nights at 8:00 pm, as a lead-in to Gossip Girl. It premiered on September 13, 2010 and was met with generally positive reviews from critics.
The season picks up at the end of summer and focuses on the students senior year of high school. It follows Adrianna's rise to fame, a new relationship between Silver and Navid and a confused Teddy who decides to reveal to his family and friends he is gay. It also deals with the aftermath of Naomi Clark's assault. Regular cast members for the season included Shenae Grimes, Tristan Wilds, AnnaLynne McCord, Ryan Eggold, Jessica Stroup, Michael Steger, Jessica Lowndes, Matt Lanter, Gillian Zinser, Trevor Donovan, and Lori Loughlin. Rebecca Sinclair continued her role as executive producer for the season.
The season premiered to 1.96 million viewers and a 0.9 rating in the adults 18–49 demographic. Christmas-themed episode "Holiday Madness", hit season highs in all key demos with 2.1 in The CW's target demo of women 18–34, a 1.4 in adults 18–34 and a 1.1 in adults 18–49. It was also the most watched episode in over a year with 2.2 million viewers tuning in. The season finale aired on May 16, 2011. The season averaged 1.75 million live viewers and a 0.9 adults 18–49 rating. It was released on DVD in the United States on August 30, 2011.Overview from themoviedb.org