Do you know these celebrities' real names?

Portia de Rossi, Tiger Woods and Bruno Mars.
Photo: Getty Images

Sure, you know who they are now. But would you recognize their birth names?

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Katy Perry was born in Santa Barbara, California.
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Question 1 of 16 Score: 0

What is the real name of pop superstar Katy Perry?

Born Katy Hudson in Santa, Barbara, California, the singer released her debut album in 2001 under her given name. She later changed her name to avoid confusion with the actress Kate Hudson.

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Natalie Portman in France.
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Question 2 of 16 Score: 0

What is the real name of actress Natalie Portman?

The Israeli-American actress, whose given name is Neta-Lee Hershlag, earned an Academy Award for "Black Swan." The Harvard-educated Portman, who also spent time at Hebrew University in Jerusalem, recently returned to her alma mater to deliver a speech to graduates.

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50 Cent grew up in New York.
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Question 3 of 16 Score: 0

What is the real name of rapper 50 Cent?

The New York-born Curtis Jackson adopted the moniker "50 Cent" as a metaphor for change. The new name seems to be paying dividends: The Grammy Award-winner has sold more than 30 million albums worldwide.

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Lorde has earned two Grammy Awards, a Brit Award and ten New Zealand Music Awards.
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Question 4 of 16 Score: 0

What is the real name of pop star Lorde?

Born in a small town in New Zealand, Ella Marija Lani Yelich-O'Connor got her start in the music business at an early age. In 2013, when she was only 16, Time magazine named her one of the most influential teenagers in the world. The following year she was on the Forbes' "30 Under 30" list.

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Gal Gadot left law school to become a model and actress.
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Question 5 of 16 Score: 0

What is the real name of actress Gal Gadot?

Israeli actress Gal Gadot was originally Gal Greenstein. The new Wonder Woman recently told Jimmy Kimmel about her name change while she was out promoting the "Batman v Superman" movie.

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Actress Portia de Rossi attends The 41st Annual People's Choice Awards at Nokia Theatre LA Live on January 7, 2015 in Los Angeles, California.
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Question 6 of 16 Score: 0

What is the real name of actress Portia de Rossi?

Born in Australia, Amanda Lee Rogers reinvented herself by taking a name from a Shakespeare play along with an Italian last name. Flash forward a few decades, and the actress is famous around the world. Married to Ellen DeGeneres, the two use their fame for charitable works and philanthropy.

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Bruno Mars has performed at the Super Bowl halftime show.
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Question 7 of 16 Score: 0

What is the real name of musician Bruno Mars?

Hawaii native Peter Gene Hernandez became quasi-famous as a child touring as "Little Elvis." His dad nicknamed him Bruno, and he adopted the last name because, he said, "I felt like I didn't have [any] pizzazz, and a lot of girls say I’m out of this world, so I was like I guess I'm from Mars."

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Miley Cyrus attends the 30th Annual Night Of Stars presented by The Fashion Group International at Cipriani Wall Street on October 22, 2013 in New York City.
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Question 8 of 16 Score: 0

What is the real name of pop icon Miley Cyrus?

Growing up in Tennessee, Destiny Hope Cyrus was given the nickname "Smiley" because of her trademark pearly whites. It was later shortened to Miley. In 2008 she added Ray in honor of her dad (Billy Ray Cyrus) and her granddad (Ronald Ray Cyrus).

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Whoopi Goldberg has hosted the Oscars on multiple occasions.
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Question 9 of 16 Score: 0

What is the real name of TV host Whoopi Goldberg?

The Manhattan-born actress-turned-TV host changed her name when she started out in show business. The decision seems to have worked in her favor: She's one of the few entertainers who have won an Emmy Award, a Grammy, an Oscar and a Tony (commonly referred to as an EGOT).

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Tiger Woods, seen here during a press conference, is one of the most successful golfers in history.
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Question 10 of 16 Score: 0

What is the real name of pro golfer Tiger Woods?

Among the most successful golfers in history, Tiger Woods was born in California with the name Eldrick Tont Woods. He was nicknamed Tiger in honor of one of his father's friends.

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Elton John has wowed audiences with his music for decades.
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Question 11 of 16 Score: 0

What is the real name of music icon Elton John?

The British-born singer was named Reginald Kenneth Dwight and changed his name to Elton John in the late 1960s. In 1998 his name changed yet again, when he was knighted by the Queen of England. He now goes by "Sir Elton."

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Musician Stevie Wonder performs onstage in New Orleans, Louisiana.
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Question 12 of 16 Score: 0

What is the real name of music legend Stevie Wonder?

Born Stevland Hardaway Judkins in Michigan, the child prodigy would go on to become one of the most beloved musicians of the 20th century. In 1968 he recorded an album of instrumental tracks under the title "Eivets Rednow," which is "Stevie Wonder" spelled backwards.

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Louis C.K., is a comedian, actor, writer, producer and director with several television show credits under his belt.
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Question 13 of 16 Score: 0

What is the real name of comedian Louis C.K.?

Louis Szekely was born in Washington, D.C. and grew up in Mexico and Boston. The famous comedian reportedly changed his last name because it's actually pronounced "See-kay."

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Musician Prince performs during the 2013 Billboard Music Awards in Las Vegas.
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Question 14 of 16 Score: 0

What is the real name of the rock icon Prince?

The legendary musician has gone by many names is his career, but the name given to him when he was born in Minnesota was Prince Rogers Nelson. He has gone on to sell over 100 million records worldwide and has fans all across the globe.

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Have you seen a good movie recently? Odds are Helen Mirren was in it.
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Question 15 of 16 Score: 0

What is the real name of actress Helen Mirren?

Born in London as Helen Lydia Mironoff, the actress went on to become a star of stage and screen. In 2003, she was appointed a Dame Commander of the Order of the British Empire for Services to the Performing Arts.

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Actor Jean-Claude Van Damme attends 'The Expendables 2' UK film premiere at in London, England.
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Question 16 of 16 Score: 0

What is the real name of action star Jean-Claude Van Damme?

Born in Belgium as Jean-Claude Camille François Van Varenberg, the action star began martial arts at the age of 11. Discovered by prolific Israeli film producer Menahem Golan, Van Damme is commonly known as "The Muscles from Brussels."

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