Sienna Miller to Celebrate with New Year's Eve Cast

Sienna Miller has joined the all-star line-up for director Garry Marshall's Valentine's Day follow-up, New Year's Eve.

The Alfie star has signed on to team up with Robert De Niro, Zac Efron, Hilary Swank, Sarah Jessica Parker, Michelle Pfeiffer, Jessica Biel and Ashton Kutcher for the romantic comedy set around the last day of the year in New York City.

Taylor Swift and her ex-boyfriend Jake Gyllenhaal are also rumoured to be part of the cast.

Taylor Swift, Ashton Kutcher and Jessica Biel appeared in Valentine's Day.