Sometimes you need to change your name to make it as a star in Hollywood or the music business.
Plenty of today’s biggest stars don’t go by their birth names — Reese Witherspoon, Mila Kunis, and Natalie Portman.
However, you probably aren’t familiar with how they ended up with their current monikers.
Some are simple. Francis Ford Coppola’s nephew Nicolas Cage changed his last name to avoid the worries of Hollywood nepotism.
Others, like Bruno Mars and Michael Caine are more inspired. And then there’s Whoopi Goldberg, whose name was changed after friends noticed her flatulence problem.
At the age of seven, Milena Markovna Kunis and her family moved from Ukraine to Los Angeles, Calif.
Mila's mother, Elvira, and father, Mark, soon enrolled her in acting classes and allowed Mila to shorten her name when she started booking her first roles on 'Days of our Lives,' '7th Heaven,' and playing a young Angelina Jolie in 'Gia.'
Joaquin Rafael Bottom is the third of five children, all with equally interesting names, including River (1970 -- 1993), Rain (1973), Liberty (1976), Summer, and a half-sister Jodean.
After Joaquin's parents, John Lee and Arlyn Bottom, married in 1969, the couple joined the religious cult the Children of God and travelled around South America. But they soon became disenchanted with the cult and moved back to the U.S. in 1978, where they changed their last name to 'Phoenix' to symbolise 'new beginning.'
Around this same time, a young Joaquin began calling himself 'Leaf,' desiring to have a similar nature-related name like his siblings. In a past Jay Leno interview, Joaquin said he had originally called himself 'Antleaf' as a child.
Leaf would become the name he would use as a child actor until, at age 15, he changed it back to Joaquin.
Before she was a chart-topping singer, Perry was producing Christian music under her birth name, Kathryn Hudson. She released gospel record 'Katy Hudson' under the former label Red Hill Records before adopting her mother's maiden name to avoid confusion with actress Kate Hudson.
According to a Salon article from 2000, Walken was originally named after actor Ronald Colman.
The change in name came about after singer Monique Van Vooren, whom Walken worked for at the time, renamed him Christopher for no real apparent reason. The name stuck, though his friends still call him Ronnie.
After being born in Jerusalem, Israel, in 1981 to an Israeli gynecologist father named Avner Hershlag and American mother named Shelley Stevens (her mother's family changed their last name from 'Edelstein' to 'Stevens' when arriving in the U.S. from Russia and Austria), Portman now holds dual American and Israeli citizenship.
The actress and 'The View' correspondent didn't become Whoopi Goldberg until, while working in a theatre in San Diego, friends noticed she had a bit of a flatulence problem and began calling her Whoopi after a whoopee cushion.
'If you get a little gassy, you've got to let it go,' Whoopi has said. 'So people used to say to me, 'You're like a whoopee cushion.' And that's where the name came from.'
It was Whoopi's mother who felt her daughter should take a Jewish-sounding last name to advance her Hollywood career. And thus Whoopi Goldberg was born.
The comedian's Hungarian surname is pronounced SEK-kay; however, after people had a tough time pronouncing his name, he decided to change it to an easier English translation: SEE-Kay.
Cyrus' father Billy Ray gave her the nickname 'Smiley' to match her cheery persona.
Over the years, the nickname became shortened to Miley. Cyrus legally changed her name in 2008.
Moore kept the last name of her first husband Freddy Moore after they divorced in 1984.
Daughter Tallulah also legally changed her name to Lula. Father Bruce Willis first broke the news in 2007 on 'The Late Show with David Letterman.'
'She wanted me to mention here on the big show that she's legally changing her name from Talullah to Lula, just Lula,' said Willis. 'She doesn't like her name.'
The rapper has said the stage name explains his split personality.
'The nickname is something I made up,' said Ludacris. 'Part of me is calm, cool, and collective (sic), while the other side is just beyond crazy.'
Before becoming a rapper, Ludacris was known as 'Chris Luva Luva' on Atlanta's Hot 97.
Born in Fairfield, Conn., to Roman Catholic parents named Susan Jordan and Harry Hyra, Margaret Mary Emily Anne Hyra changed her name to Meg Ryan after she dropped out of NYU one semester early to pursue her budding acting career.
The youngest nominee ever for a Screen Actors Guild Award, Hannah Dakota Fanning goes by her middle name professionally instead of her legal first name.
Fanning, whose mother Heather Arrington played professional tennis (her father, Dakota's grandfather, was NFL player Rick Arrington) and father, Steven Fanning, a former minor league baseball player, is of Irish and German ancestry.
In 2009, Caine explained re-naming himself after Humphrey Bogart's character in 'The Caine Mutiny' to New York Magazine.
'Bogart was my hero, and even though he came from a sort of snobby, aristocratic family -- he was a distant relation of Princess Diana -- when I was a kid I thought he was a tough guy,' said Caine. 'Any person with my working-class background would be a villain or a comic cipher, usually badly played, and with a rotten accent. There weren't a lot of guys in England for me to look up to.'
The U2 frontman and humanitarian we all know as Bono wasn't actually born with just one name. Before he became world famous, the Irish musician was known by the name Paul David Hewson. But his wife still reminds Bono of his roots, going by the name Ali Hewson.
The name Bono was originally a nickname, short for 'Bono Vox' meaning 'good voice' in Latin, said to be given by his friend Gavin Friday.
Cornelius Crane Chase was named after his mother's adoptive father, Cornelius Vanderbilt Crane, heir to the successful New York company, Crane Plumbing.
The nickname Chevy was given by his grandmother, from the medieval English 'The Ballad of Chevy Chase.' As a descendant of the Scottish Clan Douglas, she felt the name 'Chevy' seemed fitting.
The 'Batman' actor changed his name early in his career to avoid confusion with actor Michael Douglas and TV host Mike Douglas.
Though rumours have suggested he changed his name because he liked the sound of Diane Keaton's name, the actor told Grantland that wasn't true. He changed his name to join the union. It's believed he chose Keaton because of comedian Buster Keaton.
With Black Eyed Peas band mates named will.i.am, apl.de.ap and Taboo, the name Stacy Ferguson just wasn't going to cut it.
After being a member of the children's TV show 'Kids Incorporated' and performing with the girl group 'Wild Orchid,' Ferguson quickly changed her name to something that would pop like her music: Fergie.
The director of critically acclaimed 'Her' got his pseudonym from co-workers of a Rockville BMX store because 'he'd come to work without showering, and his hair was usually sticking straight up,' according to New York Magazine.
Mars changed his Puerto Rican name 'to avoid being stereotyped' into performing solely Latin and Spanish music, according to GQ.
The singer told rap-up.com the last name was to give him an edge:
'I felt like I didn't have no 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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