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Mischa Barton - Actress Mischa Barton was born in London, who knew!

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Mischa Barton - The actress got her American citizenship in 2006. She also has British citizenship.

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Craig Ferguson - The Scottish TV host was born in Glasgow, Scotland.

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Craig Ferguson - The host did his U.S. citizenship test live on the 'Late Late Show' in 2008. He scored 100%!

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Anthony Hopkins - Sir Anthony Hopkins was born in his native Wales in 1937.

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Anthony Hopkins - The actor became a U.S. citizen in 2000.

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Pierce Bosnan - Irish actor Pierce Bosnan got his US citizenship in 2004.

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Pierce Bosnan - The handsome actor currently lives in Malibu, California. He has previously lived in London, and Hawaii.

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Liam Neeson - Actor Liam Neeson became an American citizen shortly after the death of his wife, Natasha Richards, in 2008.

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Liam Neeson - According to She Knows, the actor received an overwhelming amount of support from the American people after the death of his wife. This prompted him to want to become a US citizen.

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Angela Lansbury - 'Murder She Wrote' actress Angela Lansbury was born in London.

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Angela Lansbury - The actress became a U.S. citizen in 1951, at the age of 26.

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Rachel Weisz - British actress Rachel Weisz was born in Westminster in 1970.

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Rachel Weisz - The actress received her U.S. citizenship in 2011. She lives in New York with her husband and actor Daniel Craig.

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Alan Cumming - Actor Alan Cumming only wanted to become a U.S. citizen so he could vote for Obama, reported She Knows.

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Alan Cumming - The actor was born in Aberfeldy, Scotland in 1965.

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Cary Grant - British-born actor Cary Grant changed his name in 1942, the same year he became a U.S. citizen.

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Cary Grant - The actor's name used to be Archibald Leach.

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Slash - Guns'n'Roses guitarist Slash was born in London, but moved to the U.S. when he was five years old.

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Slash - The musician's real name is Saul Hudson.

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Greer Garson - 1940s Hollywood actress Greer Garson was born in Essex.

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Greer Garson - The star became a U.S citizen in 1951.

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Alfred Hitchcock - Film director Alfred Hitchcock was born in 1899 in London.

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Alfred Hitchcock - The director of 'Vertigo', 'Psycho', and 'The Birds' became an American citizen in 1955.

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Tracey Ullman - This British-born comedic actress became a U.S citizen in 2006.

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Tracey Ullman - Ullman was born in Buckinghamshire in 1954.

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Peter Lawford - Brother in-law to J. F. Kennedy, Peter Lawford became an American citizen in 1960.

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Peter Lawford - The 'Rat-Pack' actor is famous for his roles in 'Oceans 11' and 'The Picture of Dorian Gray'.

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Jack Osborne - Son of rock star Ozzy Osborne, Jack Osborne was born in London in 1985.

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Jack Osborne - He married wife Lisa Stelly in 2012, the same year he became a U.S. citizen.

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Emily Mortimer - Journalist turned actress Emily Mortimer got her U.S. citizenship in 2010.

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Emily Mortimer - The 'Harry Brown' actress was born in London and studied in Oxford.

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Bob Hope - Comedic actor Bob Hope was born in 1903 in Eltham, London.

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Bob Hope - Despite having grown up in America, Hope got his citizenship in 1920 at age 17.

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Catherine Bell - The British-born actress moved to the U.S. in 1970 when she was only two years old.

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Catherine Bell - Bell is half Iranian and speaks Persian. She was born in London in 1968.

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Elizabeth Taylor - World famous actress Elizabeth Taylor was born in London.

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Elizabeth Taylor - Born to American parents, the actress had dual citizenship since birth.

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Peter Frampton - Rocker Peter Frampton was born in Bromley, London.

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Peter Frampton - The well-known classic rock guitarist lives in the Music City of Nashville.

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Olivia de Havilland - Born in Tokyo to British parents in 1916, actress Olivia de Havilland grew up in California.

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Olivia de Havilland - Some of her most known roles were in movies 'Gone with the Wind', and 'The Heiress'.

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David Coverdale - Rock star David Coverdale has lived in Lake Tahoe for over 20 years.

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David Coverdale - The rock singer was born in Saltburn-by-the-Sea, Yorkshire and became a U.S. citizen in 2007.

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Sheena Easton - 80s pop star Sheena Easton was born in Scotland but moved to the U.S in 1959.

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Sheena Easton - The Scottish-born performer got her American citizenship in 1992.

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Naveen Andrews - Actor Naveen Andrews was born in Lambeth, London in 1969.

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Naveen Andrews - You may know him from the TV show 'Lost', the film 'The English Patient' or the original Netflix show 'Sense 8'.

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Tina Brown - British editor Tina Brown has worked for various world-renown magazines and publishers.

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Tina Brown - She was born in 1953 in Maidenhead, Berkshire, and got her American citizenship in 2005.

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