Date of Birth

28 December 1981, New York City, New York, USA

One sister, Savannah, two half-brothers, Charles and Stephen and a step-sister, Natasha.

Her mother, Jo Miller, ran London's Lee Strasberg drama school.

Studied drama at the Lee Strasberg Institute in New York.

For more than a decade her father, American Banker Ed Miller, was married to top interior designer Kelly Hoppen.

Was educated at Heathfield School in Ascot, Berkshire.

She was born in the USA but raised in the UK (although she spent several years as a teenager studying acting and modeling in New York City).

Began a relationship with Jude Law in October 2003, having met him when they made Alfie (2004) together.

Named her two dogs Porgy and Bess after the two leading characters in Gershwin's opera of the same name.

Became engaged to Jude Law on Christmas Day, 2004.

Studied acting with Michael Margotta.

In the summer of 2005, she made her West End debut in the stage production of William Shakespeare's "As You Like It", directed by David Lan, at the Wyndham Theatre. She played the role of Celia.

Ended her seven-month engagement with Jude Law. [Late July 2005]

Her sister celebrates her birthday two days after Sienna's.

Named #48 on the Maxim magazine Hot 100 of 2005 list.

Named #2 in AskMen.com's Top 99 Most Desirable Women

Ranked and Voted #2 by AskMen.com's Top 99 Most Desirable Women of 2006

She and co-star Hayden Christensen shared a house during the filming of Factory Girl (2006) in Louisiana.

#42 on maxims hot 100 of 2006

Named #63 in FHM magazine's "100 Sexiest Women in the World 2006" supplement. (2006).

Broke up with Jude Law, again [November 13, 2006].

Fan of Chelsea FC (England football club).

Replaced Lindsay Lohan for the role of Caitlin MacNamarra in The Edge of Love (2008) starring alongside her close friend Keira Knightley.

Ranked #11 on the Maxim magazine Hot 100 of 2007 list.

Was named "Film Actress of the Year" at the 2007 Glamour Women Of The Year Awards.

Ambassador for Global Cool.

Sister of Savannah Miller , a graduate of the prestigious Central St. Martins Design School.

Received an unprecedented $75,000 settlement when a British court ruled that British tabloids the "Sun" and the "News of the World" had violated her invasion of privacy rights. The tabloids had covertly photographed Miller doing a nude scene in the production Hippie Hippie Shake (2010), and later published the pictures without prior permission. [2007]

Good friends with Guy Pearce, Keira Knightley and Anne Hathaway.

Though New York-born, Miller grew up in south-west London's Parsons Green district.

Ranked #27 on the Maxim magazine Hot 100 of 2008 list.

Was engaged to Rhys Ifans, having been in a relationship with him since June 2007 (March-June 2008).

Rhys Ifans had to ask her three times to marry him before she finally said "yes".

Was originally cast as Maid Marian in Robin Hood (2010) before being replaced by Cate Blanchett.

Passed her U.K. driving test [July 11, 2009].

Was in a relationship with DJ George Barker (August-October 2009).

Reconciled with former fiancé Jude Law after they appeared in separate stage productions in New York (October 2009).

Was in an on/off romance with Balthazar Getty (June 2008-April 2009).

Is a fan of the sport golf.

Considers Madonna to be a close friend.

Auditioned for the role of Kelly Jones in St. Trinian's (2007), but Gemma Arterton was cast instead.

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