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The "most royal" U.S. celebs

August 31, 2012 / 7:00 AM EDT / CBS News

Kevin Winter/Getty Images

Hilary Duff: 18th cousin. Shared ancestor: King Edward III.

A new study by FindMyPast.com pinpoints the singer-actress as the most closely-related U.S. celebrity to Queen Elizabeth II. Keep clicking to see which other stars are related to royalty.

Brooke Shields

Matt Sayles/Invision/AP

Brooke Shields: 18th cousin, once removed. Shared ancestor: Henry II of France.

Maggie Gyllenhaal

Dimitrios Kambouris/Getty Images for Coach

Maggie Gyllenhaal: 19th cousin. Shared ancestor: Edward III.

Jake Gyllenhaal

Paul Drinkwater/NBC via Getty Images

Jake Gyllenhaal: 19th cousin. Shared ancestor: Edward III.

Michael Douglas

Michael Buckner/Getty Images

Michael Douglas: 19th cousin, once removed. Shared ancestor: Edward III

Ellen Degeneres

Ellen DeGeneres — Kevin Winter/Getty Images

Ellen Degeneres: 19th cousin, twice removed. Shared ancestor: Edward III.

Laura Dern

Frederick M. Brown/Getty Images

Laura Dern: 19th cousin, thrice removed. Shared ancestor: Edward III

Paris Hilton

Jason Merritt

Paris Hilton: 20th cousin. Shared ancestor: Henry II.

Uma Thurman

Michael Loccisano/Getty Images

Uma Thurman: 21st cousin, once removed. Shared ancestor: Edward I.

Kyra Sedgwick

AP Photo/Andrew Burton

Kyra Sedgwick: 21st cousin, twice removed. Shared ancestor: Henry III.

Allison Janney

Alberto E. Rodriguez/Getty Images

Allison Janney: 22nd cousin, once removed. Shared ancestor: Edward I

Richard Gere

Evan Agostini

Richard Gere: 22nd cousin, twice removed. Shared ancestor: Edward I.

Sissy Spacek

AP Photo/Matt Sayles

Sissy Spacek: 24th cousin. Shared ancestor: King John.

Tom Hanks

Stephen Lovekin/Getty Images

Tom Hanks: 24th cousin. Shared ancestor: King John.

Sigourney Weaver

Robin Marchant/Getty Images

Sigourney Weaver: 24th cousin, once removed. Shared ancestor: Henry I.

Glenn Close

Fernando Leon/Getty Images

Glenn Close: 24th cousin, twice removed. Shared ancestor: King John.

Beyonce Knowles

Cliff Watts,AP Photo/Parkwood Entertainment

Beyonce Knowles: 25th cousin, once removed. Shared ancestor: Henry II

Brad Pitt

Gareth Cattermole

Brad Pitt: 25th cousin, twice removed. Shared ancestor: Henry II.

Angelina Jolie

Dan Kitwood

Angelina Jolie: 26th cousin. Shared ancestor: Philip II of France.

Alec Baldwin

Larry Busacca/Getty Images

Alec Baldwin: 29th cousin, twice removed. Shared ancestor: Aethelred the Unready.