Starlight Shores

Starlight Shores is a neighborhood, set to be introduced in the upcoming The Sims 3: Showtime expansion pack. It was announced officially in an EA press release.

Official description
A Whole New World: The new expansion pack includes a brand new world called Starlight Shores, with new venues and new objects to hone your Sims’ talents 

During the Sims 3 Showtime Live Chat, they revealed that Starlight Shores has a Southern California theme.