Fans of the mothership 'Law & Order' take note: Alana De La Garza is joining the cast of NBC's struggling 'Law & Order: Los Angeles.' Hooray! And it gets better: She's playing her 'Law & Order' character, ADA Connie Rubirosa.

According to Deadline Hollywood, the L&O veteran completes the casting overhaul that began with the dismissal of three actors and and the move of Alfred Molina's character to detective.

De La Garza joined 'Law & Order' in season 17 and was with the show until it ended in May 2010.

"I hope fans of the 'mothership' will be happy to see the return of Alana's character, Connie Rubirosa, one of the longest-running assistant prosecutors on 'Law & Order,'" Dick Wolf, the show's creator, said. "Alana has a huge following and it will be interesting to follow her character as she comes to terms with Los Angeles justice."

In other casting news ...

• William Petersen will return to 'CSI.' An upcoming story features Grissom's mother and wife, Sara, but CBS did not confirm if Petersen will appear in that episode. The actor left the series in 2009. [Entertainment Weekly]

• Laura Vandervoort is returning to 'Smallville.' The 'V' star will reprise her Supergirl role in one of the final five episodes of the hit CW series. [TVLine]

• Jordana Brewster is the new face of 'Dallas.' The 'Fast and the Furious' star will play Elena, the daughter of the ranch's cook who is in a love triangle with J.R.'s son, John Ross, and Bobby and Pam Ewing's son, Christopher. [Deadline Hollywood]

Best known as Hazel Williams in 'Gossip Girl,' Dreama Walker's career is taking off lately.

With guest spots on 'The Good Wife,' ,'Law & Order: Criminal Intent' and 'Mercy,' she's certainly primed to make those next level career steps young actresses need.

In doing so, she stars in her first leading role as Harper Grace in 'Seven Deadly Sins' (Sun., May 23, 8PM ET). The TV movie takes the notion of the "seven deadly sins" and weaves them in a modern high school setting-the film has the look and feel of modern day teen dramedies such as 'Gossip Girl' and 'The O.C.,' with fast dialogue, a group of kids who might think they're a little too grown up than they really are. And as you might suspect, some trouble goes down.

TV Squad spoke to Walker from her home in Manhattan about high school backstabbing, her own recent exploits with the seven sins and her future projects.