VIDEO: Sienna Miller Talks Starring in Broadway's CABARET: 'I'm Terrified'

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Sienna Miller stopped by this morning's TODAY to talk about her new film AMERICAN SNIPER in which she stars opposite Bradley Cooper as the wife of Navy Seal Chris Kyle. The actress also revealed that starting today, she will begin rehearsals to take over the role of Sally Bowles in the current revival of Broadway's Cabaret.

"I'm terrified, but if I wasn't I'd be really worried because it's singing and dancing on Broadway. This is a big deal!" shared the actress who went on to describe her singing experience as "kareoke and vodka." Watch the appearance below!

Roundabout Theatre Company recently announced that Miller ("American Sniper", After Miss Julie) will join the cast of Cabaret starring opposite Alan Cummingbeginning February 17, 2015. Miller will take over for current star Emma Stone, whose final performance is February 15, and play "Sally Bowles" for the final six weeks of the limited engagement through March 29, 2015.

Miller made her Broadway debut in Roundabout Theatre Company's 2009 production of After Miss Julie. She can currently be seen on the silver screen in Clint Eastwood's American Sniper and Bennett Miller's Foxcatcher.

Joe Masteroff, John Kander and Fred Ebb's Tony-winning musical Cabaret is directed by Sam Mendes and co-directed/choreographed by Rob Marshall.

An accomplished stage actress, Miller made her West End debut in 2005, playing Celia in the Young Vic's production of William Shakespeare's "As You Like It," earning praise from critics and audiences for her performance alongsideHelen McCrory and Dominic West. In 2009, she made her Broadway bow in Patrick Marber's adaptation of "Miss Julie" entitled "After Miss Julie," directed by Mark Brokaw and also starring Jonny Lee Miller. More recently, she starred in the 2011 West End revival of Terence Rattigan's "Flare Path," at the Theatre Royal Haymarket, directed byTrevor Nunn.

Photo courtesy of TODAY/NBC