{blackbabes} '90210' scoop: Keke Palmer joins the show as Jordan's sister

Nickelodeon star Keke Palmer, best known for her work on the channel's "True Jackson, VP," is moving on up! Zap2it has learned exclusively that Palmer has been cast in a major recurring role on "90210" -- and she's going to cause some complications for Naomi.

Palmer will play Elizabeth, the younger sister of Jordan (played by "Hellcats" star Robbie Jones). Jordan, a suave publisher, is introduced as a new love interest for Naomi. Naomi first meets Elizabeth at a masked ball, and, naturally, Elizabeth keeps her identity a secret. Let's just say it's not the most pleasant surprise for Naomi.

Elizabeth's storyline will carry through several episodes.

"90210" returns to The CW on January 21 with no shortage of drama.