Bella Thorne Premieres 'Alvin & the Chipmunks' in Los Angeles

Bella Thorne strikes a pose while arriving at the premiere of her new flick Alvin and the Chipmunks: The Road Chip held at Zanuck Theater at 20th Century Fox Lot on Saturday (December 12) in Los Angeles.

The 18-year-old actress was joined on the carpet by Justin Long, Redfoo, and Veep‘s Tony Hale.

Alvin and the Chipmunks: The Road Chip follows Alvin, Simon and Theodore, who through a series of misunderstandings, come to believe that Dave is going to propose to his new girlfriend in Miami…and dump them.

They have three days to get to him and stop the proposal, saving themselves not only from losing Dave but possibly from gaining a terrible stepbrother. The movie hits theaters on December 18!

FYI: Bella wore a Miu Miu top, skirt and clutch with Jimmy Choo heels.

20+ pictures inside of Bella Thorne and others at the premiere…