Exclusive: Meet 90210's Newest Troublemaker

Annie Dixon, meet your cousin from hell. 90210 has tapped up-and-coming Disney Channel starlet Abbie Cobb (Jonas, Starstruck) to play the recurring role of Annie and Dixon's spotlight-hungry cousin Emily, sources confirm to me exclusively.

Described as a country bumpkin who plays innocent but has stars in her eyes, Emily comes to town intent on stealing everything from Annie -- including her acting parts and her ex, Liam.

Bottom line: It's All About Eve Emily!

Cobb's resume also includes guest stints on The Mentalist, CSI: Miami, and Medium. Her first airdate is scheduled for early January.