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Sienna Rosie Diana Miller (born December 28, 1981) is an American-born English actress. Born in New York City and raised in London, she began her career as a photography model, appearing in the pages of Italian Vogue and for the 2003 Pirelli calendar. Her acting breakthrough came in the 2004 films Layer Cake and Alfie. She subsequently portrayed socialite Edie Sedgwick in Factory Girl (2006) and author Caitlin Macnamara in The Edge of Love (2008), and was nominated for the 2008 BAFTA Rising Star Award. Her role as The Baroness in G.I. Joe: The Rise of Cobra (2009) was followed by a brief sabbatical from the screen amid increased tabloid scrutiny. Miller returned to prominence with her role as actress Tippi Hedren in the television film The Girl (2012), for which she was nominated for the BAFTA Television Award for Best Actress and the Golden Globe Award for Best Actress – Miniseries or Television Film. Further critical acclaim followed throughout the 2010s, with appearances in the films Foxcatcher (2014), American Sniper (2014), Mississippi Grind (2015), The Lost City of Z (2016), Live by Night (2016), and American Woman (2018), as well as the miniseries The Loudest Voice (2019).
Madden
as Carol Davis

Tom Clancy's Jack Ryan: Ghost War
as Emma Marlowe

My Mother's Wedding
as Victoria

Twiggy
as Self

Horizon: An American Saga - Chapter 2
as Frances Kittredge

Horizon: An American Saga - Chapter 1
as Frances Kittredge

Indomitable
as Narrator

Extrapolations
as Becca Shearer

Scandalous: Phone Hacking on Trial
as Self

Chivalry
as Lark

Anatomy of a Scandal
as Sophie Whitehouse

Wander Darkly
as Adrienne
War & Grace
as Narrator

21 Bridges
as Frankie Burns

The Loudest Voice
as Elizabeth 'Beth' Ailes

The Catcher Was a Spy
as Estella Huni

American Woman
as Deb Callahan

National Theatre Live: Cat on a Hot Tin Roof
as Maggie

Die Clint Eastwood Story
as Self

An Imperfect Murder
as Vera Lockman

The Lost City of Z
as Nina Fawcett

Live by Night
as Emma Gould

The Tale of Thomas Burberry
as Sara

So Good to See You
as Frances

High-Rise
as Charlotte Melville

Burnt
as Helene

The Late Show with Stephen Colbert
as Self

Mississippi Grind
as Simone

The Making of 'American Sniper'
as Self

One Soldier's Story: The Journey of American Sniper
as Self

The Late Late Show with James Corden
as Self - Guest

Unfinished Business
as Chuck Portnoy

American Sniper
as Taya Renae Kyle

Foxcatcher
as Nancy Schultz

Late Night with Seth Meyers
as Self - Guest

The Tonight Show Starring Jimmy Fallon
as Self

Off Camera with Sam Jones
as Self

A Case of You
as Sarah Schipper

Just Like a Woman
as Marilyn

Nous York
as The Movie Star

The Girl
as Tippi Hedren

Yellow
as Xanne

2 Jacks
as Diana

Conan
as Self

The September Issue
as Self

G.I. Joe: The Rise of Cobra
as Ana Lewis / Baroness

The Tonight Show with Conan O'Brien
as Self

The Edge of Love
as Caitlin MacNamara

Camille
as Camille Foster

The Mysteries of Pittsburgh
as Jane Bellwether

Stardust
as Victoria

Interview
as Katya

The Graham Norton Show
as Self

Factory Girl
as Edie Sedgwick

Casanova
as Francesca

Alfie
as Nikki

Layer Cake
as Tammy

Keen Eddie
as Fiona Bickerton

Jimmy Kimmel Live!
as Self - Guest

Top Gear
as Self